I've had my sgs2 for a week now and I'm very satisfy with this phone. No problem what so ever. Anyway, I know the phone has this battery saving feature, the data 3g stays at 3g and only change to H only when we download data. So I was wondering if it is possible to get the phone to stay at 2g then goes to H when data is in use? Maybe 1 of the developers here can do this?
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That b something id like to have.
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Nurra said:
I've had my sgs2 for a week now and I'm very satisfy with this phone. No problem what so ever. Anyway, I know the phone has this battery saving feature, the data 3g stays at 3g and only change to H only when we download data. So I was wondering if it is possible to get the phone to stay at 2g then goes to H when data is in use? Maybe 1 of the developers here can do this?
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Click to collapse
There's an app for that. Maybe Juice Defender? Or something like that, it's one of those. You can set it to only use 3G when the screen is on, and then tell it to go back to 2G when the screen is off, so it isn't as power hungry, and slower data will come in, but it's worth it.
Last night I go to sleep around 1:00 and the battery was 94%. This morning in 10:00 the battery is 90%. I doubt, you can save more then 1% using such app. The only thing that I did is to disable wifi in sleep mode.
Juice defender turn off 3g data when you put the phone to sleep. When you turn it back on, the phone stays at 3g. What I'm try to say is maybe some sort of app that force it to 2g then automatically turn 3g when data is in use. So lets say, I open a web page at 3g speed. after I've found an article I'd like to read, the phone automatically turn to 2g.
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By the Way is it possible to only use H+ and to deactivate 3g completely ?
Come on dude 1% is a little right? My sgs2 also has this great battery life when put to sleep. But the problem with our android phones is when we use it continuously. Now obviously from what you are saying, I can tell that your gs2 is in sleep state most of there time. Imagine you spend 30mn reading some threads at xda, watching a movie our listen to music or sending emails..... how much battery life we can save if the phone was in 2g mode?
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(•.•) said:
By the Way is it possible to only use H+ and to deactivate 3g completely ?
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No, 1st it will suck your battery dry. 2nd you don't have H+ coverage everywhere.
Related
Which is better for battery life? O have both good 3g and widow connection are work.
Will using wiring be better for battery or just 3g?
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Yo.
3g = 3 - 5 MBits/s
WiFi = 10 - 120MBits/s
And yes we have WiFi N in our phone.
Do the math on how much longer 3g will last.
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3G sucks down the most juice. It's just a fact. 2G will drain the battery less and if you have WiFi, your battery life will increase even more. I can leave my phone on overnight with WiFi on while sleeping and it will still have 80% when I wake up (5-6 hours)
Today was the first day I have ran wifi all day and I would say me battery use appears to be about the same as having 3g coverage all day. I would have figured wifi would drain more, but I haven't noticed a difference. Again this is just 1 day experimenting (I have my wifi set to never go to sleep with the screen off too). I have been connected to wifi 90% of the time. As a bonus wifi is a lot faster than the 3g speeds I get, so I think I'm going to leave wifi on all the time now.
Thanks for the opinions guys.
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If I leave wifi on at night I lose about 8% or so in ~8hrs.
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When I'm on wifi I normally turn all mobile data off. There's a widget that comes with Juice Defender that allows you to do that with one press. You can still get emails and texts, so the only thing you can't do is stuff that requires a cell connection, like Market. It really saves a ton of battery to turn off both 2G and 3G radios.
As others have said, Wifi is better for the battery. If you're connected for most of the day it'll also help to disable the Vibrant's wifi sleep policy.
Settings>Wireless and network>Wifi settings>Menu>Advanced>Wifi sleep policy>Never
vapotrini said:
As others have said, Wifi is better for the battery. If you're connected for most of the day it'll also help to disable the Vibrant's wifi sleep policy.
Settings>Wireless and network>Wifi settings>Menu>Advanced>Wifi sleep policy>Never
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Stupid question but why? Wouldn't that eat battery? Or does it just male the phone stay on wifi rather than when it sleeps and comes back the wifi doesn't re-iniate?
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fnakfhe said:
Yo.
3g = 3 - 5 MBits/s
WiFi = 10 - 120MBits/s
And yes we have WiFi N in our phone.
Do the math on how much longer 3g will last.
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Click to collapse
your logic is wrong.
3G actually uses more battery, so if you turn 3G off, wifi will save your battery.
OK so I have read different way to save battery power on rooted nexus s but don't know what is best. I am currently using setcpu but can not tell a difference. If anyone has another way please share in great detail because I am new to rooted phones.
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Turning off the mobile data connection will make an enormous difference you won't believe it.
Second is use WiFi when available, it will save tons of battery.
Why does there always have to be a funny guy.
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He's not joking. That IS how you do it.
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Man Im sorry dude read that wrong. I thought he said turn phone off LOL......
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Not so sure about the wifi part. I've compared the phone idling on 3G vs. idling on wifi and with wifi there's definitely more power draw. Confirmed it with System Panel, the CPU is pegged at around 10% usage while idling with wifi vs. about 1% when idling on 3G.
This has been consistent with all my other android phones too (Nexus One, Vibrant, MT4G)
B3arfruit said:
OK so I have read different way to save battery power on rooted nexus s but don't know what is best. I am currently using setcpu but can not tell a difference. If anyone has another way please share in great detail because I am new to rooted phones.
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Click to collapse
can please post what your setcpu settings are? thx dude!
dinan said:
Not so sure about the wifi part. I've compared the phone idling on 3G vs. idling on wifi and with wifi there's definitely more power draw. Confirmed it with System Panel, the CPU is pegged at around 10% usage while idling with wifi vs. about 1% when idling on 3G.
This has been consistent with all my other android phones too (Nexus One, Vibrant, MT4G)
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Click to collapse
You're right, wifi uses more power than 3G, and they both use more power than 2G. When idling I'd definitely want to sit on 2G if anything. When you actually need an internet connection though, wifi and 3G will be more efficient. They'll use more power but will download much faster to make up for it.
Saving power is the same for almost all android devices:
1) turn off mobile network when not in use
2) turn off wifi when not in use
3) turn off gps
4) turn off automatic syns( if you dont use them)
5) brightness set to low
6) turn off live wallpapers
7) use a black wallpaper
8) turn off haptic feedbacks
9) set screen time out to a smaller interval.
all these steps might help you but it kind of takes away the charm of the phone imho.
dinan said:
Not so sure about the wifi part. I've compared the phone idling on 3G vs. idling on wifi and with wifi there's definitely more power draw. Confirmed it with System Panel, the CPU is pegged at around 10% usage while idling with wifi vs. about 1% when idling on 3G.
This has been consistent with all my other android phones too (Nexus One, Vibrant, MT4G)
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Click to collapse
It's definitely the opposite of that, its counter intuitive but WiFi uses significantly less battery life over 3g. I can post some numbers when I get home tonight if anyone's interested. But a good test is leave your phone on WiFi all night, then repeat on 3g and see the enormous difference. Better yet just look at the official Google specs, web browsing time is always higher on WiFi.
I did some real nice graphing of current draw at 2 second sample rate comparing various tasks which is What I'll try to post later..
What's the best rom for battery life?
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robstunner said:
What's the best rom for battery life?
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Bionix 1.2 @ stock speed, not the OC-ed version
it's stable, fast, and battery good
i have my data on all the time sync-ing every 30min
and 1 battery can last me a full day without plugging it in
Wifi automatically sleeps if your phone is idle for so long, therefore saving battery. 3g absolutely kills my battery so I have mobile data disabled when not using it. Works well for me. Also screen brightness on 0% using an app works good.
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deeren said:
Saving power is the same for almost all android devices:
1) turn off mobile network when not in use
2) turn off wifi when not in use
3) turn off gps
4) turn off automatic syns( if you dont use them)
5) brightness set to low
6) turn off live wallpapers
7) use a black wallpaper
8) turn off haptic feedbacks
9) set screen time out to a smaller interval.
all these steps might help you but it kind of takes away the charm of the phone imho.
Click to expand...
Click to collapse
I agree!!!!!!
AllGamer said:
Bionix 1.2 @ stock speed, not the OC-ed version
it's stable, fast, and battery good
i have my data on all the time sync-ing every 30min
and 1 battery can last me a full day without plugging it in
Click to expand...
Click to collapse
Should you use setcpu with this rom? Or is it better without it
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B3arfruit said:
Should you use setcpu with this rom? Or is it better without it
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i tried with and without setCPU, and the difference in power saving was marginal
so i removed it.
it probably gave me an extra hour, but there is a bug with setCPU when picking up calls, it gets staticky until the CPU is at 800 Mhz or more
so with all that i mind, i decided to remove it
leerobson99 said:
Wifi automatically sleeps if your phone is idle for so long, therefore saving battery. 3g absolutely kills my battery so I have mobile data disabled when not using it. Works well for me. Also screen brightness on 0% using an app works good.
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True, change the WiFi sleep policy to "never" to avoid this and extra battery savings.
I've been getting the best with CM7 so far, but I think all the roms that are about the same as long as you don't overclock them.
Use a black static wallpaper, low brightness, and get the black-themed MMS and Gmail apps from the Themes/Applications forum.
I can get well through my work day. Usually have 2+ hours of display time on and about 16 hours off the charger by the time I plug in at night with still 20-30% left. Depends on my reception in the day as well, which is pretty bad at work, so I think I'd have 30-35% if my reception at work was good.
deeren said:
Saving power is the same for almost all android devices:
1) turn off mobile network when not in use
2) turn off wifi when not in use
3) turn off gps
4) turn off automatic syns( if you dont use them)
5) brightness set to low
6) turn off live wallpapers
7) use a black wallpaper
8) turn off haptic feedbacks
9) set screen time out to a smaller interval.
all these steps might help you but it kind of takes away the charm of the phone imho.
Click to expand...
Click to collapse
Agreed on all points except for GPS. Since it's an on-demand service, leaving it on makes little to no impact on battery life. The phone only utilizes the GPS connection when an app calls for it and saves you the time of having to toggle it every time you need it. Just leave it on.
RogerPodacter said:
It's definitely the opposite of that, its counter intuitive but WiFi uses significantly less battery life over 3g. I can post some numbers when I get home tonight if anyone's interested. But a good test is leave your phone on WiFi all night, then repeat on 3g and see the enormous difference. Better yet just look at the official Google specs, web browsing time is always higher on WiFi.
I did some real nice graphing of current draw at 2 second sample rate comparing various tasks which is What I'll try to post later..
Click to expand...
Click to collapse
An active WiFi connection uses a lot less than an active 3g connection because the connection already exists and the data transfers faster.
An idle 3g connection uses significantly less energy than an idle WiFi connection. If you aren't using or connected to WiFi, turn it off. Set the WiFi sleep mode to sleep when the screen is off.
Hi all,
Now I've not tried this myself however a friend of mine who recently got a DHD said he was lucky if the battery lasted a day on a full charge however by turning "Data roaming" off (even though he is not roaming) he is now getting anything between 2-3 days on one charge
Data roaming was turned off by default on mine and still the battery drained pretty quick.
Using data of any kind will affect the battery badly. Notes Traveler on my device is the cause of it needing charging every day.
Same as any phone, the more you disable the longer the battery will last.
If everything was implemented correctly by HTC, turning off Roaming should have no impact on battery life at all (provided you don't use Roaming).
I believe that your friend experienced the typical warm-up phase. For some (a lot?) people the battery life is terrible when they first use the DHD, but it gradually gets better.
Your friend probably attributes the increase of battery life to the disabled Roaming, while it is just a "natural" process.
I'm roaming all the time, and my battery is actually pretty good. If i don't use it much it can easily survive two days. My record is three days with light usage. (That was with the stock 1.72 ROM)
What is data roaming anyway???
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Data roaming is set off by default. And data roaming controls data transfer when you are not on your home operator/network, i.e when traveling.
are your friend meant data connection?
MarkieSA said:
Hi all,
Now I've not tried this myself however a friend of mine who recently got a DHD said he was lucky if the battery lasted a day on a full charge however by turning "Data roaming" off (even though he is not roaming) he is now getting anything between 2-3 days on one charge
Click to expand...
Click to collapse
He probably means "3G" off? I've had mine since the end of October and got into the habit of charging the phone every night. But then wondered about the effects of turning off wifi and 3G as, currently, I'm at home most of the time and have a PC with 24" screen to play with. Anyhow, with 3G and wifi turned off most of the time I get 3 days or so from a charge. I haven't investigated turning just one or the other off as life's too short ....
HTH
Dave
PS: and someone will say, well what's the point of a smart phone if you're just using it like a dumb phone? Well, the "smart" bit here in this case is me ....
Yeah, 3G uses a bit, so the first thing i did was to disable it. No point for me using it actually, since it's WiFi all over the place here i live. If i need it, i'll simply enough just toggle it on.
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BazookaAce said:
Yeah, 3G uses a bit, so the first thing i did was to disable it. No point for me using it actually, since it's WiFi all over the place here i live. If i need it, i'll simply enough just toggle it on.
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You're roaming all the time and then in the next post you say that the first thing you did was to disable 3g... Are you just posting in order to follow others opinions or what?
And btw 3g doesn't actuality use much more power when compared to wifi, if you always use it somewhere where the signal is always poor then it's another thing.
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dvhttn said:
He probably means "3G" off? I've had mine since the end of October and got into the habit of charging the phone every night. But then wondered about the effects of turning off wifi and 3G as, currently, I'm at home most of the time and have a PC with 24" screen to play with. Anyhow, with 3G and wifi turned off most of the time I get 3 days or so from a charge. I haven't investigated turning just one or the other off as life's too short ....
HTH
Dave
PS: and someone will say, well what's the point of a smart phone if you're just using it like a dumb phone? Well, the "smart" bit here in this case is me ....
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Click to collapse
If I meant 3G then that's what I would of said. So just to be clear, there is an option "Data Roaming" that when turned on will enable a data connection when you are in another country. My friend claims that while on his home network he has turned this option off and he has seen a big improvement on battery performance. If this is true or not I'm not sure, I just simply thought I would share his thoughts with everyone else.
I did this, once i remembered where it was and I got my old battery life back. So thats a bonus, not having to take my charger to work!
Vispe85
And btw 3g doesn't actuality use much more power when compared to wifi said:
Using System Panel graphs to monitor battery drain I'd concluded that 3G drains battery at about twice the rate compared to wifi.
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Click to collapse
1. Latitude : If you are logged in, it will update your location every few minutes. This will make a phone that should be on a very low power state, re-enable lots of things that suck power. (5hrs)
2. Home screen weather clocks : Just change the update interval to something more like every 3 hours and it won't kill your battery as quick. Make sure you don't have it use GPS for location. If you don't mind, set the location to be static. (1hr)
3. Chat programs that don't rely on push. If the program needs to keep your data connection alive, it will kill your battery.(1-5hrs)
4. Anything that will update automatically. The craigslist app for example will poll the site for changes, waking the connection and the processor each time.(1-5hrs)
5. Bluetooth. : I know it isn't an app, but if you aren't using it, don't have it on. It takes enough power to eat a few hours of battery life. Pretty major. (3hrs)
6. Leave 4G on. : This might not work for everyone, but when 4G is asleep, it doesn't seem to suck juice the same way 3G does. My EVO dies quick on 4G, my Epic battery lasts longer on 4G. (as long as you are in a 4G area). (3hrs)
Disable these things and you should get battery life that you hear others bragging about.
Ahh. For reals? Oh noooooooo!!! First macho man now I can't use a clock widget anymore? Why ven live.
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austin420 said:
Ahh. For reals? Oh noooooooo!!! First macho man now I can't use a clock widget anymore? Why ven live.
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Click to collapse
PM me and I'll tell you what time it is.
(Remember you can get Spiderman on DVD, Bonesaw is Macho Man)
I'm on ec05 un rooted.
I've noticed a problem that started a few months ago. Before I get into that...some things to know:
I have 5 batteries. 1 stock and 4 aftermarket.
One issue I have is battery drain. If I'm not on wifi then I get between 2-4 hours. With wifi it is 5-7.
Whenever I change the battery it is a toss up as to whether all of my apps will load. I have rebooted 5 times today within a 30 min period. All the apps still haven't loaded and battery life dropped 20%. I have tried using the keys to reboot and also taking the battery out.
The phone will also get hot when not on wifi.
Any suggestions on how to fix? I have tried factory reset and it doesn't fix it.
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If you're already willing to factory reset, you might as well Odin back fresh and see if it helps. Unfortunately root is needed to calibrate the battery in traditional ways.
If you have 5 batteries and have to swap out every 5 hours then your probably on your phone all day.
Are you just pulling the battery or letting it power down? I know stock has journaling on which protects you from if the battery gets pulled but after o long it ill catch up and do it mine has but I get why better battery life then that. My wifi on I will get about 15 hour with little bit of use but I will get about 6 to 7. When running pandora at work the whole time and maybe mess around with it for 30 mins. Also make sure you back out of everything
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I would bet you've got some app installed that is constantly running in the background, constantly connecting and downloading data and killing the battery. Since WiFi uses less power than 3G you get better battery life on Wifi, but if you are constantly syncing and downloading you are going to kill the battery.
If you go into settings>accounts and sync and look at what's syncing it may give you a start. You could also go int settings>about phone>battery use and see what's using the most power.
The only thing that is set to sync is gmail.
The display is using 91% of the battery. Even if I don't use my phone much during the day, the display still shows 90% or higher.
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jmb521 said:
The only thing that is set to sync is gmail.
The display is using 91% of the battery. Even if I don't use my phone much during the day, the display still shows 90% or higher.
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The display is always the biggest drain. That is based on 100% of what you have used. If your battery is warm while not on wifi you are losing 3G and your phone is constantly trying to connect to sync. Put it in airplane mode for an hour and see how the drain is. My guess is a tower is down near you or under maintenance.
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When wifi is on means 3g is off. And cdma 3g uses ALOT of battery because is has no type of "sleep mode" meaning it is on 24/7 and when you do use it it is a battery hog because it also uses a lot to power the cdma bands. Just another cheap flaw in the life of sprint.
So when you are not on wifi turn off 3g.
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