Database Users

Whacky battery life theory...

OKAY. As many of you know, I used to be pissed about my battery life until I hit the gold mine with one of raven's 800 kernels. Even after trying 10 of them, only recently did one of them hit the spot for my phone. As most know, the higher the battery temperature, traditionally - the higher the battery drain. I noticed that most of the YouTube videos where people are showing off their N1s didn't have cases on their phones. Now, I regularly use two different cases: A seidio snap and one of the gel-like hard/flexible cases. Recently, I have been using the gel one. I also have a friend that I work with whose phone on the same setup and same kernel gets half the battery life that I do and she is using the snap right now. This morning, I flashed Raven's new 800 kernel AND switched my case to the Snap. If you saw my posts, I got roughly 35 hours of light-moderate use and still had 19% left a few days ago on his 800 from 5/04. After upgrading the kernel, my battery was better than stock, but not great (losing about 3%/hour). I just took off the Snap case and am flying naked right now and think I've already seen an increase in battery life. Obviously, it is too soon to tell. That being said, I'm a computer guy, not a physics guy and I don't know the thermodynamics of the material. I can say that the Seidio Snap has a felt lining and is plastic which I think traps more heat. You guys may tell me I'm nuts but I'm posting a poll to see. Now, I know everything is going to be a little subjective, especially the word "moderate"; however, I think most people contributing in the kernel threads have a solid understanding of the general consensus of the word. Sorry if the poll didn't include every option but I'm just curious.

<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.

DarkDvr said:
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
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I considerate moderate use around 30 minutes total web browsing, 10-30 texts, <1 hr of phone usage and a few e-mails. Even the iPhone can go longer than that (and I hate the iPhone). Also, coming from someone now on 800AVS kernels that can finally get over a day, 10 hours is not very good.

I found the difference between nekkid and a rubber/felt case to be neglegable if any.
Conversely I found some apps to be bad about it when it comes to waking the phone for refreshing data or keeping the system awake (or more awake) even after the display is off. My biggest battery gains were in curtailing a few apps. ymmv, best of luck.

10 Hour moderate use is ok.
But i get double that...
Recently testing the GSM Auto (PRL) mod and it seems to boost my phone considerably.
Unhooked it yesterday at 8.00 PM went for my night shift.
At work i have used it for 20 min. Music and 20-25 min of surfing and nothing else. The rest of the time it has been on standby.
Is now almost 8.00 am. 12 hour has passed and is at 73% left discharging.
Here is my hacks and settings:
ROM: CyanogenMod 5.0.6-N1
Baseband: 2.6.24.00.22U-4.03.00.21_2 (unchanged)
Kernel: 2.6.33.2 CyanogenMod [email protected] #1
Build: EPE54B
Radio is unchaged.. using what came with it.
HACKS:
The GSM Auto (PRL) mod. http://forum.xda-developers.com/showthread.php?t=670999
Beautiful Widget apk
Custom theme Cyanogen 5.0.6 theme with HelixLauncher2
http://forum.xda-developers.com/showthread.php?t=656868
Bluetooth, Wifi, GPS & Dataroaming are OFF at all times unless i need them
SYNC is constantly OFF always!!!
Brightness is at 1-13 %, and i just boost it if i need it.
Keep in mind im a light phone user. I mostly use my N1 for data service.

Sindroid said:
SYNC is constantly OFF always!!!
Brightness is at 1-13 %, and i just boost it if i need it.
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Honestly, I don't think kernel has anything to do with your battery life. At least not much.
I constantly PUSH 2 email accounts (never turn it off), I always have WiFi, BT, 3G and GPS on. I never turn them off. My brightness is at least at 75%, sometimes at 100%.
I constantly check up on Pocket Empires (game) for about 2-3 minutes every 1-2 hours.. do about 10 min calls.. check engadget, browse xda through an app a little..
And I get 10 hours. If I set brightness/sync like you, I'd probably get that battery life too. I got Cyan 5.x (latest), Amon recovery, stock kernel, stock radio.
I'm happy with my batt life, I can always swap to another battery that's always charged on the dock.. but I use the phone to its fullest and never have to wait for gps/mail/wifi.

hah2110 said:
Even the iPhone can go longer than that (and I hate the iPhone).
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Didn't think that I'd have to point out that iPhone has a 600MHz processor, 480x320 weak-ass screen and it only has 1 app running at a time?

DarkDvr said:
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
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I agree 100%. (Except I drive an Evo, not an STI)...
I get ~10 hours and that's just fine and as I would expect for this phone.
I am delighted that some people get more, but their experience is the exception, not the rule.

Battery life is getting better and better.

I haven't really done anything different, but my battery life in the past few weeks has just gotten better and better.
Right now it's 3pm. I put in a fresh battery at 9pm last night. Batt level: 55%. I was asleep for 7 out of those 18 hours, but I've had wifi and BT on the whole time. I've read and replied to 15 emails, maybe 10 texts, 15 min of calls, surfed the web for 2 hours, played about 30min of games, and had music streaming for 1.5 hrs. I've easily been making it through long work days (8am-8pm) of moderate/heavy use, whereas before I would need to recharge after 6-8 hours.
Anyone else noticing better battery life after the first few weeks? (of course, it might have to do with the fact that I'm playing with it less, but there are days when I play with it constantly and it's still doing better than 12+ hours)

I'm still on the first week with my current vibrant and I have noticed a slight improvement in battery life since I first got it--the fact that my life is pretty consistent day to day (phone-wise) helps me track it. Maybe the hardware and software need to be 'broken in' per-se?

Kubernetes said:
... I've easily been making it through long work days (8am-8pm) of moderate/heavy use, whereas before I would need to recharge after 6-8 hours.
...
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Yeah, it does get better, but 12 hours is not good enough nowadays -- if you go to dinner after work, the battery will be dead before you get home.
This is my biggest gripe about the Galaxy S -- compared to my old iPhone 3Gs the battery life just sucks.
I am hoping that the efficiencies that come with Froyo will squeeze a few more hours and make it usable for a full day.
If Samsung gets off its lazy (or incompetent) butt and upgrades us to Froyo soon, of course.

MacGuy2006 said:
Yeah, it does get better, but 12 hours is not good enough nowadays -- if you go to dinner after work, the battery will be dead before you get home.
This is my biggest gripe about the Galaxy S -- compared to my old iPhone 3Gs the battery life just sucks.
I am hoping that the efficiencies that come with Froyo will squeeze a few more hours and make it usable for a full day.
If Samsung gets off its lazy (or incompetent) butt and upgrades us to Froyo soon, of course.
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I can get close to 36 hours from mine, not sure what you guys are doing.

lralexl said:
I can get close to 36 hours from mine, not sure what you guys are doing.
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The question is, what are you not doing? We can all get it to last the long, but this is a smart phone. I cannot afford to treat it like if I was stranded on an island.

Before I get into my post I just wanted to say I'm running stock out of the box with no root/ROM/etc. Just plain ol vanilla Eclair...with the JI5 via Kies.
I'm getting about 32 hours myself. I do use tasker to set up profiles only to turn things on when I want them. Such as sync will only be enabled for specific apps when I run them then off when I close them. GPS is only on when I run Maps/Yelp/any geo-aware app then it turns itself off. Turn on silent mode/vibrate when I'm at the office by recognizing specific cell towers...stuff like that.
I also disabled "Use Wireless Networks" under Location & Security since Google says it will use it even when the phone is off. I don't know why but it's been saving on battery too. I also don't use any task killing app such as ATK since I think the phone should be smart enough to manage the memory by itself.
edit: Oh, I use automatic brightness settings too with manual brightness control on the browser (usually on low-med setting)

Mark271 said:
The question is, what are you not doing? We can all get it to last the long, but this is a smart phone. I cannot afford to treat it like if I was stranded on an island.
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Everything enabled except brightness. i turn off wifi and bluetooth when sleeping, and have sync set to once an hour for social contacts and such. For facebook etc i manually update my feed when i want to check on it, or it auto updates every hour.

Kubernetes said:
I haven't really done anything different, but my battery life in the past few weeks has just gotten better and better.
Right now it's 3pm. I put in a fresh battery at 9pm last night. Batt level: 55%. I was asleep for 7 out of those 18 hours, but I've had wifi and BT on the whole time. I've read and replied to 15 emails, maybe 10 texts, 15 min of calls, surfed the web for 2 hours, played about 30min of games, and had music streaming for 1.5 hrs. I've easily been making it through long work days (8am-8pm) of moderate/heavy use, whereas before I would need to recharge after 6-8 hours.
Anyone else noticing better battery life after the first few weeks? (of course, it might have to do with the fact that I'm playing with it less, but there are days when I play with it constantly and it's still doing better than 12+ hours)
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I'm at a point of consistent battery life of about 13 hours of moderate to heavy use. Been this way since about the middle of August. The longest I've pushed it was close to 21 hours but i'm normally in the 11-12 range.
Glad your phone is leveling out though

Kubernetes said:
I haven't really done anything different, but my battery life in the past few weeks has just gotten better and better.
Right now it's 3pm. I put in a fresh battery at 9pm last night. Batt level: 55%. I was asleep for 7 out of those 18 hours, but I've had wifi and BT on the whole time. I've read and replied to 15 emails, maybe 10 texts, 15 min of calls, surfed the web for 2 hours, played about 30min of games, and had music streaming for 1.5 hrs. I've easily been making it through long work days (8am-8pm) of moderate/heavy use, whereas before I would need to recharge after 6-8 hours.
Anyone else noticing better battery life after the first few weeks? (of course, it might have to do with the fact that I'm playing with it less, but there are days when I play with it constantly and it's still doing better than 12+ hours)
Click to expand...
Click to collapse
Nah it's not any different from when you first bought it, you're just using it less, even though you think you are using it the same.
Trust me, when people buy a new phone, the first few days or couple weeks they can't take their fingers off the phone, and it appears battery sucks. As you get over your new toy phase, you don't play with it as much, and magically you think the battery has grown new cells.
bye.

MacGuy2006 said:
Yeah, it does get better, but 12 hours is not good enough nowadays -- if you go to dinner after work, the battery will be dead before you get home.
This is my biggest gripe about the Galaxy S -- compared to my old iPhone 3Gs the battery life just sucks.
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Click to collapse
There are easy ways to take care of this if you really need better battery life. First, call T-Mobile and complain that battery life is shorter than advertised. They'll walk you through a script and send you a free spare battery. Second, get an external battery charger. They're all over ebay for about ten dollars, and most come with generic spare batteries.
I've now got a charger and three batteries, so I can pretty much make it through an entire work week without worrying. (You couldn't do that with a 3GS!)

Kubernetes said:
There are easy ways to take care of this if you really need better battery life. First, call T-Mobile and complain that battery life is shorter than advertised. They'll walk you through a script and send you a free spare battery. Second, get an external battery charger. They're all over ebay for about ten dollars, and most come with generic spare batteries.
I've now got a charger and three batteries, so I can pretty much make it through an entire work week without worrying. (You couldn't do that with a 3GS!)
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Click to collapse
Are you serious?!
You really like carrying a pocketful of spare batteries?
I have 2 spare batteries, but I pack them only when I travel.
The damned phone should be able to last throughout a full day (meaning 16 or so hours) without having to worry about turning features off or limiting your calls and mail checking).
I never had to even think about the battery with my iPhone 3Gs.

you must really be glued to your phone if you can't make it a full day

lolcopter said:
you must really be glued to your phone if you can't make it a full day
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Uhm, I am actually using it exactly the way I used my iPhone, and the way I need to use to do my work.
It just has crappy battery life
What are you comparing it to? A WM6 phone or something?

lralexl said:
I can get close to 36 hours from mine, not sure what you guys are doing.
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I get nice battery life but I use it too much, then "a day" is from 5am to 10pm, it's just too useful, and when you check usage, it's 75% display.
36 hours would be easy if I limited my screen on-time....while I would like a UV kernel it's likely not helping enough. My display is on lowest, yet I'd love a lower setting.
Aside, the more background services check stuff while screen is off, battery life hours down.
Overall, I am VERY happy with the battery life.
Sent from my Vibrant.

MacGuy2006 said:
Are you serious?!
You really like carrying a pocketful of spare batteries?
I have 2 spare batteries, but I pack them only when I travel.
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Um, the batteries are pretty small and skinny. Are you wearing pants with no pockets or something? Seriously, the thing can almost fit in the coin pocket of some jeans.
The damned phone should be able to last throughout a full day (meaning 16 or so hours) without having to worry about turning features off or limiting your calls and mail checking).
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Should? Says who? The phone is pretty average for its class. You can either complain that things are not the way you want them, or you can adapt by carrying around a diminutive spare battery.
I never had to even think about the battery with my iPhone 3Gs.
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You must be one of the few 3G/3GS users to never worry about battery life. Most of the users I know have (or had) to recharge mid-day, a pain in the butt since the battery is not removable. Your 3GS has a much slower processor/GPU, and a smaller screen with a quarter of the pixels; but even then, google "iphone 3gs battery life" and you'll get page after page of reviewers and users complaining about the abysmal battery life.
(of course, someone here claims that his Vibrant can go 40+ hours, so maybe your iPhone is a similar outlier.)

SamsungVibrant said:
Nah it's not any different from when you first bought it, you're just using it less, even though you think you are using it the same.
Trust me, when people buy a new phone, the first few days or couple weeks they can't take their fingers off the phone, and it appears battery sucks. As you get over your new toy phase, you don't play with it as much, and magically you think the battery has grown new cells.
bye.
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Its exactly what the problem is. When I flash a new rom I spend 30minutes getting back to the way I like it and my battery suffers from it. When I actually use my phone like its intended to be used I get great battery life.

Are you using any kind of ROMs? I think some ROMs greatly improves battery life.

Kubernetes said:
...
Should? Says who? The phone is pretty average for its class. You can either complain that things are not the way you want them, or you can adapt by carrying around a diminutive spare battery....
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Only a true nerd....
I wear skinny jeans.... ))
Kubernetes said:
...You must be one of the few 3G/3GS users to never worry about battery life. Most of the users I know have (or had) to recharge mid-day, a pain in the butt since the battery is not removable. Your 3GS has a much slower processor/GPU, and a smaller screen with a quarter of the pixels; but even then, google "iphone 3gs battery life" and you'll get page after page of reviewers and users complaining about the abysmal battery life.
(of course, someone here claims that his Vibrant can go 40+ hours, so maybe your iPhone is a similar outlier.)
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Click to collapse
Dude, I've had one iPhone 2G and two iPhone 3Gs. I also have two Galaxy S variants (international and a Vibrant).
There is no comparison between the iPhone 3Gs and the Galaxy S in terms of battery life. With the same kind of usage, the iPhone 3 Gs would last about 32-37 hours, while the Galaxy S would last about 12-13.
Even the iPhone 2G lasted about 18-20 hours. Now, compared to my previous HTC WM6 and WM6.5 phone, the Galaxy S does have longer battery life, but that's nothing to be so proud of.
The Galaxy's screen is certainly better than the 3Gs's, but the Super AMOLED is supposed to be more efficient than the LCD on the iPhone. Plus, in real world use, the iPhone 3Gs certainly feels smoother than the Galaxy S, even with the lag fix, and scrolling on the iPhone is smooth as butter, while the Galaxy S is choppy.
And it's not just the OS, because the EVO scrolls noticeably smoother than the Galaxy S.

I consistently get 20+ hours out of one charge. I can't really use my phone at work, but during breaks and lunch I'm always getting on it and checking mail/feeds/youtube or whatever and still have about 70% by the time I go home. I usually have more than half by the time I go to bed unless I've been doing some tethering or heavy audio/video streaming.

SamsungVibrant said:
Nah it's not any different from when you first bought it, you're just using it less, even though you think you are using it the same.
Trust me, when people buy a new phone, the first few days or couple weeks they can't take their fingers off the phone, and it appears battery sucks. As you get over your new toy phase, you don't play with it as much, and magically you think the battery has grown new cells.
bye.
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lol...thats so true...

Battery life sucks

Just got the phone 2 days ago and the battery life does not look very promising. Phone can only last about 15hrs after a full charge with light wifi/3g usage and no auto sync. Quite disappointing.

kiwi45 said:
Just got the phone 2 days ago and the battery life does not look very promising. Phone can only last about 15hrs after a full charge with light wifi/3g usage and no auto sync. Quite disappointing.
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I remember my X10 having the same problems when I got it, give it a a few weeks and it should start giving you better battery life. If that doesn't solve it, I remember a firmware update for the x10 that came out that improved the battery life a lot, so maybe they could do that for the Arc.

kiwi45 said:
Just got the phone 2 days ago and the battery life does not look very promising. Phone can only last about 15hrs after a full charge with light wifi/3g usage and no auto sync. Quite disappointing.
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The battery should improove, I got mine on Monday.
I charged mine on Wensday morning and it lasted until Friday morning, with backround
sync on, 2G the first day, 3G on all second day, some sms, listning to music and a call
both through skype over WiFi and normal, both calls lasted over an hour.

I read somewhere this phone doesn't have "Auto brightness"? maybe this is why battery is poor.

syl0n said:
I read somewhere this phone doesn't have "Auto brightness"? maybe this is why battery is poor.
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It does, it's just subtle. You have to actually be looking for it, and there's no way to disable it.

Does anyone know if there gonna be released a battery for arc with higher mAh?
Which battery does the model includes?
Also I saw BA750 with 1500 mAh.

I'm having a similar problems with Battery life, gets to 7% within 14 hours - not what I expected since the battery seems fairly large.
I have wifi on, GPS off, bluetooth off, Push email on, a number of calls through the day. Very disappointing at the moment.
I remember somewhere reading about how to charge the battery properly, I did it on my HTC Desire, it probably gave me like another 20% after doing it - if anyone knows please let me know... I think it went something like:
1. Charge the phone whilst the phone is off
2. When fully charged pull the power and turn on
3. connect the power again until fully charged
4... can't remember the rest or even if the above was correct?

If you want longer battery life for the times when going near a electric socket is not an option, just do what I did whenever I went travelling somewhere - buy an additional battery, charge it and keep it in your bag or whatever, and then just pull it out when your battery dies.
As for battery life of smartphones in general, I had pleasure of toying around with x10 and my x8, the battery life fluctuated at times. In the start it barely lasted a day or two without usage, now my x8 can usually go for like 5 days without charging.
It's deffo very weird, but whatever.

refract said:
If you want longer battery life for the times when going near a electric socket is not an option, just do what I did whenever I went travelling somewhere - buy an additional battery, charge it and keep it in your bag or whatever, and then just pull it out when your battery dies.
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That's a good suggestion - however it isn't really what I am after, I need my phone to last until bed time before I charge it.
Now I know this is a new phone and we all go a bit nuts when we get them, using them heavy, seeing what they can do etc - buy yesterday I made a point of using my phone exactly how I normally use my phone (once the novelty has worn off) and the battery life is POOR!

Yeah well, in my experience, battery tends to start being a lot better after a week of owning a device, at least when it comes to mobile phones.
I'm not the type of guy who acts like a little child when he gets his new toy ( in this case, a mobile phone ), so I'd like to believe my experiences can be used as sort of a benchmark in these cases.
As I said, both x8 and x10 batteries lasted very little for me in the beginning, gradually expanding later on - x10 could last 2-3 days without charging with just moderate usage ( SMS, maybe a bit of web browsing + few phonecalls ), while x8 would last 3-5.
Just report back a bit later if the battery life improved a bit.
When I get my Arc after it gets released here in Croatia, I'll do my own review of it.

Im usually really positiv about anything I buy (since I inform myself about possible disadvantages) but the battery life sure is not good at all.
Its ok, but cant call it good.
Still the device itself is quite astonishing.
Edit: switching to GSM only has given me quite a boost in stamina !

and that my dear friends is another reason why i want a neo 23% smaller screen ... more pocket friendly lol.

xilw3r said:
and that my dear friends is another reason why i want a neo 23% smaller screen ... more pocket friendly lol.
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and thats the reason why I got myself an Arc, larger screen and not chubby ;-)
Sent from my Xperia Arc.

I'm finding the battery life better than my X10 so I'm more than happy with it!

kiyu727 said:
and thats the reason why I got myself an Arc, larger screen and not chubby ;-)
Sent from my Xperia Arc.
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touche.
that chubbyness of neo aint no chubbyness its 13 mm thick in the fattest place which is still not much. my mom uses P1, now THATS chubby xD

xilw3r said:
touche.
that chubbyness of neo aint no chubbyness its 13 mm thick in the fattest place which is still not much. my mom uses P1, now THATS chubby xD
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Well compared to the Arc, it feels chubby in my opinion. Im very sensitive about that

I've got 35% battery after 13 hours use. Thats texting, few phone calls, fb, twitter and a few games and wifi. I'm more than happy about that.
Sent from my Xperia Arc using XDA App

I can't complain about battery life. I've had wifi on since I turned it on, data on, skype on, bin on fb and twitter, internet etc, played a few games and still battery is on 51%. Considering the phone is brand spanking new, I am very happy with it.
Btw, has anyone else noticed the stream of iphone apps now appearing on android. Back in the day when I had an Ipod touch, I had a game called Tap Tap Revenge. N you'll never guess what I just found

Like the x10 it would take some time for the battery to work well, as the phone is quite busy in the background when you start using it for the first time. Give it a couple of days and report if your lifetime starts improving.
Sent from my X10i using Tapatalk

I agree with everyone here.. even with P1i being chubby ( I miss those days )
as everyone said give it some time and it will improve a lot...
at first my battery lasted like 14 hours ( constant usage everything on, 3G, auto-syncing... you name it )
However, I tested my phone yesterday and found out that for the first two hours it lost 2 percent with just 10 minutes whatsapp chatting, everything on, GPS wifi... etc.... So its stand by is very good.... 9 hours chatting using whatsapp, browsing and checking XDA app and I still got 60% to go

evo dislikes?

battery life.... that's really about it. htc really dropped the ball when it came to that. i have never been able to achieve decent battery life, even on custom kernels.
what about you guys?

I have no issues whatsoever. I get about 12-16 hours on a stock rooted EVO. I also have an extra Hero battery that I can pop in my back pocket if need be.
Simply love this phone

really, bad battery life, because i use Vaelpak with netarchy 4.2.2cfs havs less and i get a fulll day with normal to a little heavy usage, and on light days y get like 30 hours, by light i mean checking my email 3 times a day, facebook also 3 times a day a few minutes worth of call and couple dozen texts, also a few online searches on sports schedules and so. so i dont know how some people still say battery sucks. any how my dislike is probably my evo doesnt have my coffee ready when it wakes me up

emcp422 said:
really, bad battery life, because i use Vaelpak with netarchy 4.2.2cfs havs less and i get a fulll day with normal to a little heavy usage, and on light days y get like 30 hours, by light i mean checking my email 3 times a day, facebook also 3 times a day a few minutes worth of call and couple dozen texts, also a few online searches on sports schedules and so. so i dont know how some people still say battery sucks. any how my dislike is probably my evo doesnt have my coffee ready when it wakes me up
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most of us have no idea how some of you achieve the 30+ hr battery life. even with a 2000mAh battery & sbc i get no where near that.

couldn't really point it out, you know with this my final set up i wiped, installed rom, booted, wiped, erased battery stats, flash kernel, boot, set cpu profiles, turn mobile data always on to off used the 3g tweak where you go into ##3282# and changed the last prl to 0 and 0.0.0.0, turn my screen brightness down use launcher pro, and after doing all this i let my phone discharge till it hit 15% and charged to full did this the next 3 charge cycles, and after testing it for a week i realized that if i didnt use my phone it would only drop 1% every 2 hours and when i was using it it would drop about 1% every 5 minutes

fixxxer2008 said:
most of us have no idea how some of you achieve the 30+ hr battery life. even with a 2000mAh battery & sbc i get no where near that.
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Well, that's because most of us don't use the Evo to play 3D games that push the GPU to the limit, watch Sportscenter using the Slingplayer while you're at work, constantly flash different things just to see what they do or it looks like, HDMI mirroring, etc. If all I did was check my emails a few times a day and send out a few texts, my phone would last 30 hours, too. During off peak hours that my phone isn't constantly syncing and I'm asleep, it will go down from 100% to maybe 92% overnight. The thing is, I never put it down during the day so I (and people like me) have to keep it on the charger at all times or keep extra batteries. I do both. lol
Asides from that, my only complaints include the annoying pop-up window that comes up with the OEM verison of Swype. I also wish that Sense had landscape support for the home screen and that the camera wouldn't take 5 seconds to focus and shoot. But the pros greatly outweight the cons IMO.

Yes on stock battery with juice defender and sbc i get 15-16 hours with normal use.. less if I play a game or 2. Really have nothing bad to say about the evo
from my phone duh

To be honest, I've had sooo many phones and id have to say the evo is hands down my favorite phone ever. I will say its hard to say what I dislike because this phone literally does EVERYTHING. I don't expect battery life to be amazing given it has a 4" screen but if I had to choose id say the power/volume buttons. HTC could have done a better job on the quality; being a rom flasher tears these buttons a new one.
Sent from my PC36100 using XDA Premium App

emcp422 said:
really, bad battery life, because i use Vaelpak with netarchy 4.2.2cfs havs less and i get a fulll day with normal to a little heavy usage, and on light days y get like 30 hours, by light i mean checking my email 3 times a day, facebook also 3 times a day a few minutes worth of call and couple dozen texts, also a few online searches on sports schedules and so. so i dont know how some people still say battery sucks. any how my dislike is probably my evo doesnt have my coffee ready when it wakes me up
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Click to collapse
I don't believe these claims for 1 minute..... with your heavy or "Light" usage.
Checking email 3 times a day, it's a smartphone(should be able to check emails when you want), should be able to check facebook when you want. To make calls when you want and not worry about your phone being dead in 4 hours.
The EVO is still my favorite phone to date, I buy a new smartphone every 12 months when allowed...
I have so many different roms/kernels and give them a few days to settle down. I have try the battery conditioning tips, etc..... There is no way, unless your barely using your smartphone that ANYONE get's that good of battery.
I sync my emails every 2 hours, facebook every 2 hours, have weatherbug synced, tweetcaster(twitter) 15 minutes and my 2 games of wordsmith and wordfeud.
I did a test last night, charged my phone to 100%, turned wifi on and set my phone on my night stand all 11pm. I woke up at 9am and my batter way down to 24%. I had many missed notifications, text, emails, game moves, etc..... That much of a drain with wifi on and on standby is crazy!
I will be getting the nexus 4g and then the EVO 3D, I hope one of those phones batteries will be improved than the EVO 4G.

I don't believe these claims for 1 minute..... with your heavy or "Light" usage.
Click to expand...
Click to collapse
I have so many different roms/kernels and give them a few days to settle down. I have try the battery conditioning tips, etc..... There is no way, unless your barely using your smartphone that ANYONE get's that good of battery.
Click to expand...
Click to collapse
Believe it. I can get about 40 hours on my phone with light usage. 20-30 texts a day, 2-3 times checking facebook, and a few emails sent and received all day. I can get this with Myn's 2.2 rom, and with using Setcpu to gradually scale the cpu down as the battery goes down.
ANd I probably could go 48 hours if I was on wifi and not 3g.

sitlet said:
Believe it. I can get about 40 hours on my phone with light usage. 20-30 texts a day, 2-3 times checking facebook, and a few emails sent and received all day. I can get this with Myn's 2.2 rom, and with using Setcpu to gradually scale the cpu down as the battery goes down.
ANd I probably could go 48 hours if I was on wifi and not 3g.
Click to expand...
Click to collapse
Pics or it didn't happen .......
Sent from my PC36100 using XDA Premium App

fixxxer2008 said:
battery life.... that's really about it. htc really dropped the ball when it came to that. i have never been able to achieve decent battery life, even on custom kernels.
what about you guys?
Click to expand...
Click to collapse
I agree at first that battery life was less then spectacular. But after rooting and using custom Roms as well as setcpu my battery life is very good. I would consider myself a moderate user (50 -60 emails, 40-50 texts, 20-30 calls, some internet searches etc) and my battery after unplugging at 7am and getting home at 6pm is still 50-60%.

I have to say that I am disappointed with the camera, low light shots/making videos isn't as good as some of the other phones out there. I was looking forward to the camera when I got the device, and it took such good pictures in the store - it hasn't been that horrible using it or anything, I have gotten some good pics and all, but these days I usually have to take 5 pictures to get one good shot.

I can't stand the ****ty speakerphone. I use it every day while driving and I have to lay the phone on my chest to hear the person. If the Evo 3Ds speakerphone is this ****ty they better toss in a bra with the phone purchase.
Sent from my PC36100 using XDA App

love the phone, but I've had it replaced twice (thanks insurance) for build quality issues, light leak, screen splotches, cracked buttons, etc.
Battery life has been horrible since day 1 (bought on release date), but 2 spare batteries gets me through the day.
The cameras are great, but the FFC sucks without bright lighting, and the rear cam is great until it's pitch black out. Also for video it's not the best.
Kickstand is awesome but unstable at times
it wasn't free? lol I don't know what else to say it's my favorite phone I've ever owned so far!

imex99 said:
I did a test last night, charged my phone to 100%, turned wifi on and set my phone on my night stand all 11pm. I woke up at 9am and my batter way down to 24%. I had many missed notifications, text, emails, game moves, etc..... That much of a drain with wifi on and on standby is crazy!
Click to expand...
Click to collapse
You battery should have been above 90%, and you shouldn't have missed any notifications.
Your phone is obviously defective.

i wish this screen would show detailed, but my phone only shows system as a whole, haven't looked for a more detailed way, don't really need it as dont need to prove my battery stats to none

I can't really say that the battery is an issue with mine. I almost never use wifi, have gps on all the time. Sync twitter, weather and gmail, and play at least 2 Wordwise games a day. I take the phone off of the charger at about 8:00 AM and it lasts until I put it back on around 12:00 PM. If I play two or three hours of games it won't make it that long, but neither will any other smartphone that I have used.
My only disappointments with this phone are, the mediocre camera, the lack of internal memory, and Sprints crappy data speeds. I have had mine since launch day and have only replaced one speaker that went bad, other than that it has worked flawlessly.

CAMERA SUCKS. 5mp iPhone camera mops the floor with the POS camera on the Evo. Evo is still a better phone, but my god, the camera blows.

My complaints are that HTC doesn't like us very much anymore and that hardware isn't user upgradeable lol. The first one doesn't matter since we have xda, and the second industry is just unrealistic lol. But my battery life is normal, get about 9 hours per battery which is fine since I have 2.

SGN 10.1 battery endurance is phenomenal !

Yesterday we had a day grey in grey and I started my morning as usual with my SGN 10.1
Emailing, Newspaper reading, some drafting for my next lectures, updating apps and then I found some really funny cabaret streams .......
Well, my Note was constantly on and streaming YouTube and some other sources
What shall I tell You: just in time I went to bed it was down to 5%
14 hrs !
No other tab can beat THAT :laugh:

I found a quick way of gaining 5 hours battery per day: I bought my 5 yr old son a Galaxy Tab 2 (early xmas present). Now my note 10.1 lasts me all day, every day It even works with my phone, a Note 2
My note 10.1 has so far been running for 23 hours and 10 minutes and has 26% battery remaining. It's definitely on a par with my previous tablet, an ipad 3 :good:

Last week, took mine off the charger Sunday morning and didn't put it back till Friday night. I didn't use it much, just about 4 hours of screen time. Total time on battery was 134 hours 27 minutes. Still had 55% of the battery left. That standby time if phenomenal.

yeah my last charge was 5 hours 40 mins screen on time and more than 13 days standby. Battery was at 34%. It uses next to no power on standby, absolutely amazing.

Sent from my GT-N8013 using xda app-developers app

I use my Note 10.1 on two day cycles. I am in college and take all my notes with it. I can use the tablet as much as I want and I get two days of battery out of it.

I agree. I'm coming from Asus Transformer Infinity and SGN 10.1's battery is beyond belief. It seems like it's running on nuclear energy. Amazing for such a light tablet.

aydc said:
I agree. I'm coming from Asus Transformer Infinity and SGN 10.1's battery is beyond belief. It seems like it's running on nuclear energy. Amazing for such a light tablet.
Click to expand...
Click to collapse
tbh, it feels as though it runs down a bit quicker than my old transformer prime tf201...
idk though

My best:
Sent from my GT-N8010 using xda app-developers app

AndroHero said:
Click to expand...
Click to collapse
I win
Sent from my GT-N8010 using Tapatalk 2

guys why my screen always say it uses 75/80% when i look at battery usage ?
it makes my battery drain very fast

The amount of time your screen is on is the usage percentage shown eg if you tablet is on for 10 hours and out of that u were using it for 8 hours then the percentage would be 80
Screen is the biggest battery eater which is the case with any device so it effects your battery life the most

samir_a said:
The amount of time your screen is on is the usage percentage shown eg if you tablet is on for 10 hours and out of that u were using it for 8 hours then the percentage would be 80
Screen is the biggest battery eater which is the case with any device so it effects your battery life the most
Click to expand...
Click to collapse
thank you samir for fast respond :good:

samir_a said:
The amount of time your screen is on is the usage percentage shown eg if you tablet is on for 10 hours and out of that u were using it for 8 hours then the percentage would be 80
Screen is the biggest battery eater which is the case with any device so it effects your battery life the most
Click to expand...
Click to collapse
I think its what percentage of your battery it has used, not the screen uptime vs total uptime
Sent from my HTC Glacier running CM7

I got mine yesterday and charged it, hardly did anything with it except download and play a game for less than 10 minutes and have a little doodle with sketchbook pro then left it on standby over night then did a little browsing this morning.
Found the wifi to be slow and sluggish and wouldn't even show all images even though my broadband is 100mb speed.
The battery lasted 13 hours, don't know how long it would last if I'd actually used it a bit more cause it seemed to go down pretty fast even on wifi bout the same life as my s3.
Hardly call that phenomenal.
I'm really disappointed to be honest after reading all the reviews.
Sent from my GT-I9300 using xda premium

Samsungnooby said:
I got mine yesterday and charged it, hardly did anything with it except download and play a game for less than 10 minutes and have a little doodle with sketchbook pro then left it on standby over night then did a little browsing this morning.
Found the wifi to be slow and sluggish and wouldn't even show all images even though my broadband is 100mb speed.
The battery lasted 13 hours, don't know how long it would last if I'd actually used it a bit more cause it seemed to go down pretty fast even on wifi bout the same life as my s3.
Hardly call that phenomenal.
I'm really disappointed to be honest after reading all the reviews.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Somethings up with your device maybe........ive tested mine a few times, constant use, thats, from 100% untill the 5% warning, mostly browser and youtube......5min break here, 5min break there...........on average 10h MINIMUM of CONSTANT use.........if your dropping 13h without much use, then somethings up with your device and might be worth asking in the q&a thread for help
Are you using full brightness?

banderos101 said:
Somethings up with your device maybe........ive tested mine a few times, constant use, thats, from 100% untill the 5% warning, mostly browser and youtube......5min break here, 5min break there...........on average 10h MINIMUM of CONSTANT use.........if your dropping 13h without much use, then somethings up with your device and might be worth asking in the q&a thread for help
Are you using full brightness?
Click to expand...
Click to collapse
Probably just needed a full charge as I only charged it from half way as it came half charged and if that doesn't work I'll do a full discharge and if that doesn't work I'll send it back
Full brightness is too high for me and auto is too low so had it at less than half way.
Only really got it so could use it to take out with me and do some paintings but was worried about it switching off that's why not happy.
Thanks for your reply, really like this tablet and it really is what I thought it would be but if it hasn't got the battery then it's not good.
I'll see how it goes.
Sent from my GT-I9300 using xda premium

Make sure you set WiFi to turn off when the screen is off.
Odd though that the WiFi was slow. It makes me think something is wrong with the WiFi itself that's causing problems.

Samsungnooby said:
Probably just needed a full charge as I only charged it from half way as it came half charged and if that doesn't work I'll do a full discharge and if that doesn't work I'll send it back
Full brightness is too high for me and auto is too low so had it at less than half way.
Only really got it so could use it to take out with me and do some paintings but was worried about it switching off that's why not happy.
Thanks for your reply, really like this tablet and it really is what I thought it would be but if it hasn't got the battery then it's not good.
I'll see how it goes.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Personally, I've noticed that the s-pen digitiser, when it is switched on, drains a considerable amount of energy. So do not expect extreme battery life if you use a lot the s-pen. Anyway, do check that the energy saving option under "Options - S Pen" is ticked. This way the digitiser will be off when the stylus is in its receptacle. This will save a good amount of battery when you're not using the pen (provided you insert it in its receptacle). Of course, this setting will have no effect whatsoever while you're using the pen.
In any case, a tablet like this is full of features and components that are potential battery killers, so how long the battery lasts, it's really up to how the owner uses it, and not only how much. For instance, I may be surfing the internet and checking emails all day long without using the pen, and consider it heavy use. How long will the battery last in such case? 15 hours? Ok.
Now, a seemingly opposite case could be this: I may have the tablet constantly standing by, but with the pen off its receptacle. Since I have never used the tablet, I have full right to swear that my usage of the tablet is extremely light. Well, only because I've left the pen out of its receptacle, my battery will run flat in just about 13 hours or so. And what's more confusing, is that if I go checking the battery stats, I will see no trace of the pen being the responsible for such a high drain, so I probably will end up getting the (wrong) idea that the battery life of this tablet is extremely poor.
Another case, among the many, is when the tablet tries to sync using the 3G connection, but gets no answer from the network because of problems of the mobile operator network (server not responding). This causes the 3G radio to remain constantly on and drain the battery very fast. Again, it is very difficult to understand the reason for such a quick discharge. Such an issue happens in certain areas of my city with Vodafone, for instance. When I go to that areas, I have to take care to switch off 3G data connection, or else my battery will be empty in a matter of a few hours.
IMHO the problem is, that android os is very incomplete when it comes to providing information for analysing power consumption, and this has always been the cause of big confusion and frustration.

JuniorGG said:
Personally, I've noticed that the s-pen digitiser, when it is switched on, drains a considerable amount of energy. So do not expect extreme battery life if you use a lot the s-pen. Anyway, do check that the energy saving option under "Options - S Pen" is ticked. This way the digitiser will be off when the stylus is in its receptacle. This will save a good amount of battery when you're not using the pen (provided you insert it in its receptacle). Of course, this setting will have no effect whatsoever while you're using the pen.
In any case, a tablet like this is full of features and components that are potential battery killers, so how long the battery lasts, it's really up to how the owner uses it, and not only how much. For instance, I may be surfing the internet and checking emails all day long without using the pen, and consider it heavy use. How long will the battery last in such case? 15 hours? Ok.
Now, a seemingly opposite case could be this: I may have the tablet constantly standing by, but with the pen off its receptacle. Since I have never used the tablet, I have full right to swear that my usage of the tablet is extremely light. Well, only because I've left the pen out of its receptacle, my battery will run flat in just about 13 hours or so. And what's more confusing, is that if I go checking the battery stats, I will see no trace of the pen being the responsible for such a high drain, so I probably will end up getting the (wrong) idea that the battery life of this tablet is extremely poor.
Another case, among the many, is when the tablet tries to sync using the 3G connection, but gets no answer from the network because of problems of the mobile operator network (server not responding). This causes the 3G radio to remain constantly on and drain the battery very fast. Again, it is very difficult to understand the reason for such a quick discharge. Such an issue happens in certain areas of my city with Vodafone, for instance. When I go to that areas, I have to take care to switch off 3G data connection, or else my battery will be empty in a matter of a few hours.
IMHO the problem is, that android os is very incomplete when it comes to providing information for analysing power consumption, and this has always been the cause of big confusion and frustration.
Click to expand...
Click to collapse
Ah think that was it thanks had the battery saving in pen unticked, wasn't sure whether to tick it or not.
I only have the wifi as got 3g on my phone so don't need it.
Main purpose bought it for was the pen but now have that ticked when not using it should make a difference
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