3G Radio vs. WiFi Radio: Power Consumption - EVO 4G General

This is a question that I have been thinking about for a little while. Even though I work from a home office, I have always had WiFi off (I usually keep WiFi and GPS off). But since I only get about 600-700kbps in my office and 1.1mbps in the kitchen and other parts of the house, I figured I'd just run WiFi on the phone (which by the way is not bad).
I have not noticed a significant change in my battery life. I still get over a day of battery life with moderate usage.
My thought is that the 802.11 radio probably uses less power than the 3G radio does for data.
Anyone care to shed some light? Maybe there are datasheets out for the chipsets that specify the power consumption?

The short answer is your observations are correct. It's pretty well documented and a lot of places will recommend it.
I am not sure where you would find the hard data you are asking for though.

It has been known for a long time that wifi uses less power than 3G. It's part of the tips in saving battery life for many devices.

Forgot to mention, for $10 you can buy an app "Locale" that will turn on and off WiFi based on where you are. I have not tried it yet, but it seems highly recommended. It does the WiFi and virtually every other setting as well, ring tones, screen, etc...

I figured I was right. Thanks for the info you guys!

WiFi will generally use less power if you are continuously streaming and pushing a lot of data, however, 3G will likely use less power for light use like occasionally checking email, twitter, light web browsing, etc.
So, use WiFi if you will be downloading and using a lot of data, like watching streaming video and downloading lots of apps from the market.
If you are just checking a couple of things here and there, and you're constantly turning your phone on and off between periods of light use 3G will use less power.

Forgot to mention, for $10 you can buy an app "Locale" that will turn on and off WiFi based on where you are. I have not tried it yet, but it seems highly recommended. It does the WiFi and virtually every other setting as well, ring tones, screen, etc...
Click to expand...
Click to collapse
This is exactly what i do, and have been doing so through out my android time
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zeuzinn said:
WiFi will generally use less power if you are continuously streaming and pushing a lot of data, however, 3G will likely use less power for light use like occasionally checking email, twitter, light web browsing, etc.
So, use WiFi if you will be downloading and using a lot of data, like watching streaming video and downloading lots of apps from the market.
If you are just checking a couple of things here and there, and you're constantly turning your phone on and off between periods of light use 3G will use less power.
Click to expand...
Click to collapse
I have an Exchange account setup with PUSH and 3 IMAP accounts (checking every 5 minutes), I figure that goes a bit further than just checking a few things here and there?

Related

Sprint Touch Information

I am considering trading my Sprint Mogul, for the touch (if it is possible) but am wondering if it is a good idea. The main reason for my trade is that I have recently had a chance to use the touch and like the look, and also my battery on my mogul has recently stopped lasting even half a day, with no usage.
So I just want to know how good is the battery life on the touch and information about its problems and its good features.
Also does anyone know if it is possible to trade my mogul for a sprint touch? I have the total equipment protection plan if that makes any difference.
killerkhatiby009 said:
I am considering trading my Sprint Mogul, for the touch (if it is possible) but am wondering if it is a good idea. The main reason for my trade is that I have recently had a chance to use the touch and like the look, and also my battery on my mogul has recently stopped lasting even half a day, with no usage.
So I just want to know how good is the battery life on the touch and information about its problems and its good features.
Also does anyone know if it is possible to trade my mogul for a sprint touch? I have the total equipment protection plan if that makes any difference.
Click to expand...
Click to collapse
It will last about a full day, but of course always depends on usage. I use mine to no end! I have FlexMail running all the time, it's my music/video player, my day's outlook, GPS, and of course the usual phone features. If anything, have a car charger handy, as well as a charger at work and home just in case.
Hmm, so its about a full day with heavy usage, while for me, I barley use my phone throughout the day, besides making a few calls and texts, so it should last about 1 1/2 to 2 days. Can anyone else comment about the battery life.
killerkhatiby009 said:
Hmm, so its about a full day with heavy usage, while for me, I barley use my phone throughout the day, besides making a few calls and texts, so it should last about 1 1/2 to 2 days. Can anyone else comment about the battery life.
Click to expand...
Click to collapse
with HEAVY usage i can burn the battery down in about 4-6 hours but that's using bluetooth internet sharing or gps or non stop browsing. But yes it's safe to say with typical heavy usage (taking breaks from the Touch every now and then to check out the real world) it should last a full day. The times when I barely use it, only a couple short calls, a coule of texts, and email checking set for every 5 minutes, it'll last about 2 days. I got cradles with spare battery slots for home and the office and a car charger so battery life is not an issue for me. I also have my backlight set on lowest, but I remapped the camera button to toggle it to full for use in direct sunlight.
One thing to watch out for is signal strength. I had a mogul at first and hated the battery life, until I realized that it was cause I had almost zero service in my room so the mogul was constantly searching and that would drain the battery overnight. I got a cell service repeater for a couple hundred bucks and it boosted the signal in my room a few bars then i stopped having that issue, but i still got rid of my mogul cause i never use the keyboard: i'm a block recognizer user. Plus the Touch's screen is more suited for finger usage since it's completely flush so you can easily touch things in the corners and sides without a stylus. But I'm sure my touch would fair just as badly if i turned off my cell booster, cause there's a dead zone at my office in one of the warehouses and if i stay there too long i can pretty much watch my battery melt before my eyes.
Good luck, you'll definitely love the increased ram.
Thanks for the info, but I don't believe that it is the low signal that has been causing my battery to drain so fast, because up until about this month, my battery would last two days easy, it would be at 70% at the end of the first day, and then 30% at the end of the next day. But now it barley lasts 11 hours even though I havn't moved from my house or changed my habits greatly.
Also i don't have my phone set to check emails automatically or anything, so if i get a touch the battery should last at least two days, making about 2 5 minute calls, and maybe 2 texts, other than that no usage. Because that is what i do with my mogul right now, and it only lasts 11 hours, although before it was 2 days.
Since the battery life seems to be ok, can anyone comment on general usability of the touch? Things like how is it not having keyboard/wi fi, and how many soft resets generally, the speed of the device, and memory usage (although i don't think its a problem with the touch).
Thanks for the help.
killerkhatiby009 said:
Thanks for the info, but I don't believe that it is the low signal that has been causing my battery to drain so fast, because up until about this month, my battery would last two days easy, it would be at 70% at the end of the first day, and then 30% at the end of the next day. But now it barley lasts 11 hours even though I havn't moved from my house or changed my habits greatly.
Also i don't have my phone set to check emails automatically or anything, so if i get a touch the battery should last at least two days, making about 2 5 minute calls, and maybe 2 texts, other than that no usage. Because that is what i do with my mogul right now, and it only lasts 11 hours, although before it was 2 days.
Click to expand...
Click to collapse
Well your battery could've been worn out due to overcharging or manufacturing defect. Either way get a touch I think it's a better phone anyways as long as you can live without physical keys.
yea i edited the post, asking about that and things like ram, using on screen keyboard, speed, gps, and soft resets. What do you think about those kind of things, I have been using spb full screen keyboard on my mogul to see if i don't mind having no physical keyboard, and while i prefer having the keys, the on screen one is usable. But as for soft resets and speed, that kind of stuff is what i can't test right now, so what do u guys think about using it.
killerkhatiby009 said:
Things like how is it not having keyboard
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Click to collapse
This is a non issue for me, I use block recognizer. I've been palm/windows mobile user for probably about 10 years so for me Block Recognizer (Graffiti) is second nature. Accuracy is about 99% assuming I have a good fullsize pen stylus, 95% with the built in stylus, 90% with my finger nail, and 70% with if my nail is cut too short. I can probably average 15-45 wpm depending on what i'm using to write and how much i focus. It's pretty easy to pick up block recognizer or letter recognizer and once you do you'll find it's the fastest most accurate way for a device with this screen size. The only downside I've found is that Microsoft doesn't care about it so it hasn't been upgraded in ages so there's no way to customize the strokes or enter special commands like Cut/Copy/Paste.
killerkhatiby009 said:
Things like how is it not having wi fi
Click to expand...
Click to collapse
I have Sprint Sero so wifi is useless to me. I just use my unlimited data which is pretty fast. It also saves me a bundle since I can just connect to any laptop over bluetooth or usb and use internet sharing. i really impressed my boss the other day when he was in a jam and needed to access the net on his Macbook Air but there was no wifi around. I just pulled out my Touch set up ICS over Bluetooth and connected his mac to it, then put my touch back in my pocket and handed him his MBA and said here you can surf, I set it up to use my phone's internet over bluetooth. He just stared at me for a minute and was like whoa can my iPhone do that. Of course I just laughed and said I guess you're iphone's not that great after all.
killerkhatiby009 said:
how many soft resets generally
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Click to collapse
Soft resets...due to memory leaks or programs acting up? Almost never. I only really soft reset after I install new programs and I use WisBar so programs are really closed when I hit Close/OK instead of just being minimized. I do a full hard reset probably once every 3-6 months and manually reinstall all my programs to make sure I have the latest versions of everything and just to keep my device clean. Other than that it's pretty stable.
killerkhatiby009 said:
memory usage (although i don't think its a problem with the touch).
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Click to collapse
104.88 Total with 6.1 Rom
Typical usage - 60.86 Free
Immediately after soft reset - 72.00 Free
The only programs that are left running open (in the background, I have wisbar set to really close programs when i hit the close/ok button but for these programs they're just minimized):
PointUI
WisBar
Windows Media Player
Mail
ActiveSync
HTC Album
S2U2
Programs I have installed (pretty much everything is installed to main memory, my 8gb storage card is for TomTom maps, music, and dictionaries):
Wisbar Advance 3
Point UI Home
Point Tweak
Air Hockey 3D
Astraware Boardgames
Atomic Cannon
Billard Master 3
Core Player
Epocrates
Google Maps
Live Search
Hexacto Lemonade
Lexisgoo English Disctionary
Pocket Artist
vTap
JiveTalk
HiCalc
Pow Wow
Resco Explorer
Resco Photo Viewer
SpaceTime Calc 3.0
SpaceTime Free Calculator
TKCreater
Zio Golf 2
A_C S2U2
SKTools
TomTom Navigator
Opera Mini 4.1
Emesterec JBED Java
Opera Mobile 9
BibleReader
Lingvosoft English <-> French Dictionary
Lingvosoft English <-> Japanese Dictionary
Few custom apps written for work
Only other issue to look out for is the storage card corruption issue. When I first got the phone my card used to get corrupted a lot and i'd lose all the data on there. Never figured out exactly why but I think it was due to losing power while the card was being accessed. This could be caused by soft resetting while stuff is being accessed or be card getting momentarily ejected due to it's placement. I used to have most of my programs installed to the card and I would soft reset often. Now just about everything is on main memory and if I have to soft reset I hold the power button down to Power Off then Power back on manually once it's done. Since I started doing that I haven't had a single corruption issue.
Wow, that was a very informative post thanks a ton, ill keep the storage card corruption issue in mind, and install everything on to the main memory, seems like the touch is a pretty stable phone because of its large ram, battery life is good, and using the on screen keyboard seems to be tolerable. only things ill miss is wmwifirouter, and the flash on the camera.
killerkhatiby009 said:
Wow, that was a very informative post thanks a ton, ill keep the storage card corruption issue in mind, and install everything on to the main memory, seems like the touch is a pretty stable phone because of its large ram, battery life is good, and using the on screen keyboard seems to be tolerable. only things ill miss is wmwifirouter, and the flash on the camera.
Click to expand...
Click to collapse
Oh yah the Camera is quite poor if the lighting isn't ideal luckily i rarely use it.
Lack of wifirouter is a bummer but if you're crafty you can connect the phone to a computer with wifi either through cable and bluetooth then set up an ad-hoc network for internet sharing between any number of computers. I prefer using the cable for all that cause bluetooth and constant data usage burns the battery.
Trust me, you will not regret getting the Touch. I've gone through quite a few phones, and this is the best! As mentioned above, the amount of memory is amazing! I have easily installed 25+ apps all on the main memory, which leaves my 8GB SD open for all music, movies, and files. Along with the storage memory, you have a bunch of RAM, with 6-7 heavy apps open, I still have at least 40MB open, which still tops majority of the phones with startup memory.
As for no wifi, if you have an unlimited data connection, then your not losing anything, and I think carriers have this cheaper because of this. I use Spb Full Screen Keyboard, and might get Resco Keyboard, since it's in a package, which is better then having to slide out the keyboard and messing with the screen rotation.
The flush screen definitely does help with the accessibility of the screen. It has bluetooth v2.0.
I think the only thing I don't like is there is no flash.
hmm so it is possible to use bluetooth for internet, is there a tutorial on how to do this with the touch, so that when I get mine, i can do it, still not as good as wifirouter, but it will work with some devices.
killerkhatiby009 said:
hmm so it is possible to use bluetooth for internet, is there a tutorial on how to do this with the touch, so that when I get mine, i can do it, still not as good as wifirouter, but it will work with some devices.
Click to expand...
Click to collapse
Yes you can connect your phone to your computer over bluetooth (or USB) and then surf on your computer using your phones data plan. And if you really want you can create an ad-hoc wireless network to share internet to muliple computers over wifi.
Connecting your phone to your computer is easy. Just open up Internet Connection Sharing, then choose USB or Bluetooth, then press Connect. You if you get an error about registration or passwords use google to solve it. If using USB plug into your computer and the first time it'll log up the necessary drivers, if you've already installed Windows Mobile Device Center or the latest version of ActiveSync it'll have the necessary drivers. If using Bluetooth search for a new bluetooth device on your desktop, select your phone follow the prompts to connect. It should add it as a Bluetooth PAN device.
To setup the ad hoc wireless network varies greatly depending on OS, use google to find a good guide.

Something is killing my battery?!?!

So I am at work, looking at my N1, and I'll let you all tell me if you think there is a problem...Since a full charge last night, my phone has been off the dock for 2h9m ...
In that time, my battery has dropped 14% already. The biggest culprit...the display...with 59%...despite only being on for 15m. I always use it on the middle brightness setting from the power bar. Ive lost basically 1% for every minute the screen has been on. At that rate, my phone wouldn't even last 2 hours turned on.
Am I being paranoid? Do I have some rogue program sucking battery life? Your thoughts?
Everybody says controversial stuff about phones like N1 or iPhone regarding battery life. But I can tell you from experience and some conferences I have been the following tips to improve your N1 battery:
-Leave brightness to minimum. Only at street you will need to have it at medium or maximum so you can see well.
-Use 3G or wifi when available. It will save more battery than if you use edge.
-Use push, also it's better.
-User apps like TaskManager to auto kill some application that remain open.
And last thing, if you have a new N1 the battery life will improve with the use within the next 2 weeks. Also, I'm sure you are playing around more than usual if you just got it.
I hope this help you.
*#*#4636#*#*
Battery History
See what the figure for 'running' is, if it's high, something is stopping the phone sleeping. Should that be the case, chage the top drop down box to 'partial wake usage' and see what is to blame.
blastik said:
Everybody says controversial stuff about phones like N1 or iPhone regarding battery life. But I can tell you from experience and some conferences I have been the following tips to improve your N1 battery:
-Leave brightness to minimum. Only at street you will need to have it at medium or maximum so you can see well.
-Use 3G or wifi when available. It will save more battery than if you use edge.
-Use push, also it's better.
-User apps like TaskManager to auto kill some application that remain open.
And last thing, if you have a new N1 the battery life will improve with the use within the next 2 weeks. Also, I'm sure you are playing around more than usual if you just got it.
I hope this help you.
Click to expand...
Click to collapse
This is the complete opposite of what everyone else will tell you.
Most people say to force 2G (Edge) because it'll save battery over 3G. There are reports that WiFi will use less battery than 3G though, but not as good as 2G. Google even says this on the screen where you force 2G.
Push Email will require a constant polling on the internet. Since Android is a web OS, its probably connected to the internet anyway, but you can disable Auto Sync and Background Sync to save battery (once again, Google says this on that screen).
I agree with #1 and #4 though. If you don't want to do the lowest brightness setting, try the Auto Dim, it seems to dim it a lot more than my old Windows Mobile phones did.
mindfrost82 said:
This is the complete opposite of what everyone else will tell you.
Most people say to force 2G (Edge) because it'll save battery over 3G. There are reports that WiFi will use less battery than 3G though, but not as good as 2G. Google even says this on the screen where you force 2G.
Push Email will require a constant polling on the internet. Since Android is a web OS, its probably connected to the internet anyway, but you can disable Auto Sync and Background Sync to save battery (once again, Google says this on that screen).
I agree with #1 and #4 though. If you don't want to do the lowest brightness setting, try the Auto Dim, it seems to dim it a lot more than my old Windows Mobile phones did.
Click to expand...
Click to collapse
At first I had the same opinion as you have but after I watched this video it changed radically
http://www.youtube.com/watch?v=OUemfrKe65c&feature=player_embedded
mindfrost82 said:
Push Email will require a constant polling on the internet.
Click to expand...
Click to collapse
No it doesn't, that's the beauty of push email. It opens a connection to the server and just sits idle.
Rusty! said:
No it doesn't, that's the beauty of push email. It opens a connection to the server and just sits idle.
Click to expand...
Click to collapse
You are right so ... it saves battery at the end.
@mindfrost82. Check out the video, it will tech you few things because most of people is wrong as I was in the past.
Battery Drain
My phone would drain 15% battery in 1 hour just being idle witht he screen off. I dialed *#*#4636#*#* and changed the option from WCDMA preffered to WCDMA only. When I don't get a 3g signal (not often) I jsut go back to that and set it to GSM only. For one reason or another the WCDMA preffered SUCKS THE BATTERY!
4 hours of the phone being idle and only 5% battery drain! DO IT! IT WORKS!
blastik said:
At first I had the same opinion as you have but after I watched this video it changed radically
http://www.youtube.com/watch?v=OUemfrKe65c&feature=player_embedded
Click to expand...
Click to collapse
WTF? 3g uses LESS POWER than edge/wifi?!
My whole world just got turned upside down
Thanks for posting the video
ap3604 said:
WTF? 3g uses LESS POWER than edge/wifi?!
My whole world just got turned upside down
Thanks for posting the video
Click to expand...
Click to collapse
You need to be careful of this. The point the video made is that if you download something OF SIMILAR SIZE, you will realize battery gains by virtue of the fact that what you are downloading/uploading takes exponentially less time to retrieve. The real question is, if 2 phones are both casually browsing for the same amount of time...without worrying how much information was actually transferred...one on Edge, the other on 3G...is there a difference in battery performance?
What the video said is just common sense. If I am going to send you 20 MB file and one way takes 2 minutes to download it and the other takes 10 minutes to download, then OF COURSE the 2 minute method is going to be more efficient. So you can download on Wifi where it might take x amount of time, compared to 3G where it takes 5x or edge where it takes 10x. Thus, if the file size the person is going to download is known, then of course it makes sense to tell them to wait until they are on wifi. However, many of us casually browse, on the spot, without regard to the type of connection we are on.
RayKinStL said:
You need to be careful of this. The point the video made is that if you download something OF SIMILAR SIZE, you will realize battery gains by virtue of the fact that what you are downloading/uploading takes exponentially less time to retrieve. The real question is, if 2 phones are both casually browsing for the same amount of time...without worrying how much information was actually transferred...one on Edge, the other on 3G...is there a difference in battery performance?
What the video said is just common sense. If I am going to send you 20 MB file and one way takes 2 minutes to download it and the other takes 10 minutes to download, then OF COURSE the 2 minute method is going to be more efficient. So you can download on Wifi where it might take x amount of time, compared to 3G where it takes 5x or edge where it takes 10x. Thus, if the file size the person is going to download is known, then of course it makes sense to tell them to wait until they are on wifi. However, many of us casually browse, on the spot, without regard to the type of connection we are on.
Click to expand...
Click to collapse
Yeah, what you just said is right. But still you are saving battery up! Plus I wouldn't use edge at all in my N1. What's the point of having almost everything disabled so I can receive calls?
I remind you that while edge is sending/receiving data you cannot get any calls
blastik said:
At first I had the same opinion as you have but after I watched this video it changed radically
http://www.youtube.com/watch?v=OUemfrKe65c&feature=player_embedded
Click to expand...
Click to collapse
This is an excellent video, I highly recommend watching it if you are even remotely interested in the inner workings of our phones.
blastik said:
I remind you that while edge is sending/receiving data you cannot get any calls
Click to expand...
Click to collapse
Thanks, I didn't know this, for the info this thread is full of great stuff...
1) middle brightness is very bright. I'm sure you can live with 25%. Display brightness will always drain battery like mad.
2) 3G power use is usually decent. The N1 has terrible RF so it might be fighting 2G/3G. That will cost you a lot of power. If you're getting full 4 bars 3G everywhere you go even underground, you might be ok, but in low reception areas, it's gonna drain your battery struggling to boost power. Bigger issue during a call too.I notice this on my Milestone. The N1 completely fails at 3G while my Milestone fights for it. As a result the Milestone gets quite hot.
3) There are sometimes apps that run in the background. Some people insist task killers aren't necessary, but lemme give you an example. Stupid Speedtest program failed to acquire my location. After a test, you can't really exit, so you just hit home. Droidforums fanatics will always repost that link to that one thread where they talk about memory and its ok to not have to kill an app. Think again. The GPS turns on because of Speedtest and it keeps trying to acquire your location. Gotta kill it with a task manager or that thing will kill you. Or a webpage. I've heard of people going to some site that keeps refreshing. Oh good luck to your battery. Make sure you close these things. Use a task manager. Sometimes Facebook or Twitter might be the culprit even if your refresh rates are awfully long. I do not understand this phone sometimes. At times I feel that multitasking/memory management on Android gets you into more trouble than if you just flat out restricted it like in the iPhone. I'm not saying the iPhone's restrictions are the way to go, but Apple knew what it was doing. There's a reason Android phones gobble power and pull data like mad even when you aren't aware. Random apps sometimes start. Facebook widget refreshes even though the app itself is set not to auto notify and to update on its own. So with so many things running loose, its quite easy to see why your battery can go down so fast.
RayKinStL said:
You need to be careful of this. The point the video made is that if you download something OF SIMILAR SIZE, you will realize battery gains by virtue of the fact that what you are downloading/uploading takes exponentially less time to retrieve. The real question is, if 2 phones are both casually browsing for the same amount of time...without worrying how much information was actually transferred...one on Edge, the other on 3G...is there a difference in battery performance?
What the video said is just common sense. If I am going to send you 20 MB file and one way takes 2 minutes to download it and the other takes 10 minutes to download, then OF COURSE the 2 minute method is going to be more efficient. So you can download on Wifi where it might take x amount of time, compared to 3G where it takes 5x or edge where it takes 10x. Thus, if the file size the person is going to download is known, then of course it makes sense to tell them to wait until they are on wifi. However, many of us casually browse, on the spot, without regard to the type of connection we are on.
Click to expand...
Click to collapse
That's exactly the idea I got from that video too, which makes sense.
dmo580 said:
1) middle brightness is very bright. I'm sure you can live with 25%. Display brightness will always drain battery like mad.
2) 3G power use is usually decent. The N1 has terrible RF so it might be fighting 2G/3G. That will cost you a lot of power. If you're getting full 4 bars 3G everywhere you go even underground, you might be ok, but in low reception areas, it's gonna drain your battery struggling to boost power. Bigger issue during a call too.I notice this on my Milestone. The N1 completely fails at 3G while my Milestone fights for it. As a result the Milestone gets quite hot.
3) There are sometimes apps that run in the background. Some people insist task killers aren't necessary, but lemme give you an example. Stupid Speedtest program failed to acquire my location. After a test, you can't really exit, so you just hit home. Droidforums fanatics will always repost that link to that one thread where they talk about memory and its ok to not have to kill an app. Think again. The GPS turns on because of Speedtest and it keeps trying to acquire your location. Gotta kill it with a task manager or that thing will kill you. Or a webpage. I've heard of people going to some site that keeps refreshing. Oh good luck to your battery. Make sure you close these things. Use a task manager. Sometimes Facebook or Twitter might be the culprit even if your refresh rates are awfully long. I do not understand this phone sometimes. At times I feel that multitasking/memory management on Android gets you into more trouble than if you just flat out restricted it like in the iPhone. I'm not saying the iPhone's restrictions are the way to go, but Apple knew what it was doing. There's a reason Android phones gobble power and pull data like mad even when you aren't aware. Random apps sometimes start. Facebook widget refreshes even though the app itself is set not to auto notify and to update on its own. So with so many things running loose, its quite easy to see why your battery can go down so fast.
Click to expand...
Click to collapse
I'll second this, I never used to use a task killer as I figured it was just extra drain on the battery but after running across some rogue programs that kept running after being closed and draining the heck out of my battery I decided to install taskkiller and set it up to autokill apps when the screen goes off.
It's really easy to setup just install it from the market then use it to kill everything then flip through your homescreens make sure everything is up and running and go back into task killer and add everything there to the ignore list and turn on "autokill when screen off" now you don't ever have to worry about rogue apps killing your battery again and everything else will function normally.
blastik said:
Yeah, what you just said is right. But still you are saving battery up! Plus I wouldn't use edge at all in my N1. What's the point of having almost everything disabled so I can receive calls?
I remind you that while edge is sending/receiving data you cannot get any calls
Click to expand...
Click to collapse
yes you can, the phone will stop whatever data it's processing and take the call.
seanhassars said:
yes you can, the phone will stop whatever data it's processing and take the call.
Click to expand...
Click to collapse
I'm sure 100% that while phone is receiving data over edge you wont get calls. I know because I had push enabled and afterwards I was getting SMS from my carrier that I have missed calls. It might say "ey sb is trying to call you" and then stop data transfer but for sure your will miss first call if someone is trying to reach you several times.
Check it out yourself.
blastik said:
Everybody says controversial stuff about phones like N1 or iPhone regarding battery life. But I can tell you from experience and some conferences I have been the following tips to improve your N1 battery:
-Leave brightness to minimum. Only at street you will need to have it at medium or maximum so you can see well.
-Use 3G or wifi when available. It will save more battery than if you use edge.
-Use push, also it's better.
-User apps like TaskManager to auto kill some application that remain open.
And last thing, if you have a new N1 the battery life will improve with the use within the next 2 weeks. Also, I'm sure you are playing around more than usual if you just got it.
I hope this help you.
Click to expand...
Click to collapse
there are a lot of people who say do not use a task killer, including google devs etc.
i used advanced task killer for the longest time, being used to needing one as a WM user before getting my n1. after reading various posts on the issue, i tested without and my battery life increased.
i use juice defender now as well to turn off the apn and wifi, based on speeds/location/etc
have it set to prefer 2g (dont get 3g at home)
screebl also setup to turn screen off when not in certain position in hand
last one is setcpu (need root for this though) underclocking the cpu (including advanced setting and profiles i have set)
lowest setting for brightness
also keep gps off unless needed
i hit about 24hr from unplug til 10% w/ heavy useage, wifi on all the time (although juicedefender handles when its on/off)
just now went to kmobs UV kernel and testing that to increase my times
i've done a 24hr test from 100%>10% based on each app i've mentioned
I think while we are on topic of battery life.. for those of you who are rooted. Here is another link that I would recommend. I used these on my HTC Dream and works great on the Nexus One. Increase your battery life 10 fold.
Your Tube: "Get Better Battery Life" by droiddog
sorry not allowed to link yet

Save battery by keeping WI-FI alive...

This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the 3 choices. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it.
If you're going to copy and paste directly from Android Central, the least you could do is give them credit.
kcaz said:
If you're going to copy and paste directly from Android Central, the least you could do is give them credit.
Click to expand...
Click to collapse
i thought as much myself.
as far as i understand, this is useful if you also have and use internet from the carrier, so if you keep wifi on and use it rather than 3g, which uses more power, you will have lower battery consumption. but if you are not synchronizing data during night, by keeping all connections off, you will not need to keep wifi on, am i right?
kcaz said:
If you're going to copy and paste directly from Android Central, the least you could do is give them credit.
Click to expand...
Click to collapse
Haha it was the "counter-intuitive" that gave it away right?
As soon as I came to those words I knew it was copy pasta!
Yeah I accept that I copy pasted from android central..... And also I am not taking any credit for that.. I am jst sharing it. It might cme usefull 4r sme1 aroundhere..
Sent from my GT-I9100 using XDA App
I find that turning Data and WiFi off when not required is the simple solution .
jje
JJEgan said:
I find that turning Data and WiFi off when not required is the simple solution .
jje
Click to expand...
Click to collapse
yep! during the night i do the same!
besides: the reason why OP got better battery with wifi turned on (when screen off) is that this avoids the android OS bug (suspend & event/0)...
with wifi turned of my battery life increased dramatically, switching data off additionally has only a minor effect then!
koolshubh said:
Yeah I accept that I copy pasted from android central..... And also I am not taking any credit for that.. I am jst sharing it. It might cme usefull 4r sme1 aroundhere..
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
you are taking the credit by writing the post like its you , you should link your source and quote them not just post their post on a different website!!
yeah sure some may find it usefull but you should still do it properly and quote and link them
yea its writing down @ power save settings.
Just use JuiceDefender man. Will help you more than Android Central tips
This actually kills my battery since I have a d-link lol.
Disfected said:
This actually kills my battery since I have a d-link lol.
Click to expand...
Click to collapse
You should try Cisco then
Sent from my SGSII using xdaPremium
This is the worst thing you can do in terms of battery life on SGS2, since this kicks the famous Android OS bug into high gear, especially on D-Link class routers. With wifi sleep set to never, my SGS2 loses around 10% an hour just sitting completely idle.
Mine was set to never as default.
aydc said:
This is the worst thing you can do in terms of battery life on SGS2, since this kicks the famous Android OS bug into high gear, especially on D-Link class routers. With wifi sleep set to never, my SGS2 loses around 10% an hour just sitting completely idle.
Click to expand...
Click to collapse
+1
Sent from my GalaxyTab using xda Premium

Please post your experience with IM/voice apps regarding power (and data) consumption

The title is saying it all - please post your experience with IM/voice apps regarding general quality and power (and cellular data) consumption - this should include IM-only stuff like Whatsapp or more complete programs like Skype.
Right now I am on a very well optimized configuration that (together with a 4200 mAh battery) and a modest usage pattern results in only needing a recharge every 5 days or so - however during the last days I have done more specific testing with Skype (and some other apps) - and here are my problems:
- Skype does not seem to be able to always get usable voice over my 3G connection - lag and packet loss makes that unusable most of the time - in your personal experience is there any other voice app that does better with non-stellar 3G connections?
- I decided to test for a day the power consumption if I leave 3G data and Skype always on - so that I can use it as an alternative (free) messaging platform with some of my friends - however it seems that the power consumption is quite serious (and checked with BetterBattryStats the CPU only goes to deep sleep in 80% of the time it should); in your personal experience is there any other messaging app that is much better in regard to power consumption?
- also the 'background data usage' bothers me a little with Skype - it seems that there are constant packets sent over the data connection and this can be a problem with people having more limited cellular-data plans - any other app that is better in this regard?
I use IMO. This one can have multiple accounts connected: Skype, Facebook, ICQ etc. I have data on all the time so it will stay connected. The consumption is usually from 0.9 to 2 % per hour. The only problem with IMO is that you can not make calls with Skype unless other user is also connected to Skype using this app.
Nice!
anubius said:
I use IMO. This one can have multiple accounts connected: Skype, Facebook, ICQ etc. I have data on all the time so it will stay connected. The consumption is usually from 0.9 to 2 % per hour. The only problem with IMO is that you can not make calls with Skype unless other user is also connected to Skype using this app.
Click to expand...
Click to collapse
I tried IMO in the past and i had abandoned it back then, but now after reading this I have installed the latest beta and I must say I am impressed - good battery consumption and very decent sound with acceptable bandwidth - I will make a more detailed post in a few days when I will finish testing with it!
I am using imo too. I always felt Skype was eating too much of battery while active.

How much screen on time do you get?

How much Screen On Time do you guys get on the Nexus 4? I just want for comparison, cause I want to check if my phone is alright. Preferably Stock 4.3 (latest version as of 13/10/13), because that's what I'm using.
I get up to 3 hours on 2 Day period and a little over 3 hours on 1 Day period.
For me it's quite enough, if I have a busy day, and I don't use phone that much, but if I am on a journey it's too less.
Also an extra question, does the free space left pop up is Android built in feature or it's some kind of app? I want to turn it off, because it annoys me, when apps update it keeps disturbing me, pauses apps, gets in front of screen, really annoying when you have 10 apps that need to update. https://docs.google.com/file/d/0B3kAm0MqKUNzcEVSYTdYSjdJcnc/edit?usp=sharing
Please, anybody?
Check here http://forum.xda-developers.com/showthread.php?t=1992627
3 hours screen on time is normal, if you havent modified anything especially. i personally get between 5.5-7 hours on average, but my phone is highly modified and set up in that way.
simms22 said:
3 hours screen on time is normal, if you havent modified anything especially. i personally get between 5.5-7 hours on average, but my phone is highly modified and set up in that way.
Click to expand...
Click to collapse
What exactly have you modified? Using 2G, custom kernel or something?
Yukicore said:
What exactly have you modified? Using 2G, custom kernel or something?
Click to expand...
Click to collapse
custom rom, custom kernel, many system apps deleted, nfc removed, voltages changed..
My average is 4.5-5hrs. Wi-Fi 90%of the time, everything on sync, GPS on, auto brightness on, Bluetooth paired, nova launcher. I did however disabled some features like vibrations for calls,text ect.., touch screen haptic feedback(feedback only for keyboard), couple of other things but can't remember.
I am factory stock. Ota 4.3
Sent from my neXus⁴ using Tapatalk 2
3-4 hours on a single day typical for me.
100% brightness, Wi-Fi on all the time, all syncs enabled.
Your battery life sounds normal to me
Sent from my Nexus 4 using xda app-developers app
1slow4G said:
My average is 4.5-5hrs. Wi-Fi 90%of the time, everything on sync, GPS on, auto brightness on, Bluetooth paired, nova launcher. I did however disabled some features like vibrations for calls,text ect.., touch screen haptic feedback(feedback only for keyboard), couple of other things but can't remember.
I am factory stock. Ota 4.3
Sent from my neXus⁴ using Tapatalk 2
Click to expand...
Click to collapse
How? Do you play games? Or you just usually text, use internet and stuff like that?
I have mostly everything disabled, google+, google now, Wi-Fi & Mobile network location, minimal sync apps, also wifi most of the time, rarely mobile data.
Yukicore said:
How? Do you play games? Or you just usually text, use internet and stuff like that?
I have mostly everything disabled, google+, google now, Wi-Fi & Mobile network location, minimal sync apps, also wifi most of the time, rarely mobile data.
Click to expand...
Click to collapse
I dont play games, i have some installed but never play them lol. Mostly all just regular usage like you mentioned.
Yukicore said:
How? Do you play games? Or you just usually text, use internet and stuff like that?
I have mostly everything disabled, google+, google now, Wi-Fi & Mobile network location, minimal sync apps, also wifi most of the time, rarely mobile data.
Click to expand...
Click to collapse
how is your phone/data signal? do you get hspa+? lte? the quality of your signal plays a big role in battery life, also having a solid/fast data speed connection(the faster the data goes through, the less battery will be used). and, do you make lots of phone calls?
simms22 said:
how is your phone/data signal? do you get hspa+? lte? the quality of your signal plays a big role in battery life, also having a solid/fast data speed connection(the faster the data goes through, the less battery will be used). and, do you make lots of phone calls?
Click to expand...
Click to collapse
I usually get HSPA+, I live in a city, so the phone does some cell tower switching, but I get about the same battery life if I stay at home all day. I don't make a lot of phonecalls, very little, really, 10 per day or something
simms22 said:
custom rom, custom kernel, many system apps deleted, nfc removed, voltages changed..
Click to expand...
Click to collapse
Wouldn't disabling NFC enough, please enlighten me on this.
eksasol said:
Wouldn't disabling NFC enough, please enlighten me on this.
Click to expand...
Click to collapse
delete the nfc and tags apks from /system/app/ then reboot.
simms22 said:
delete the nfc and tags apks from /system/app/ then reboot.
Click to expand...
Click to collapse
What? WHY? I have my NFC disabled, why delete?

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