Develop Bugs

4g or 3g battery life

So, I read somewhere that 4g is more similar to wifi, indicating that 4g is better for the battery if you have good signal. But I notice the exact opposite, 4g kills my battery whereas 3g isn't SO bad. Can anyone confirm this?
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For me it's always been from best to worst
Wifi, 3g, 4g.
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I use 4G frequently while at work. I obviously don't use my phone as much while I'm at work as when I'm not, so it's tough for me to get a good comparison.
It does seem to me when downloading bigger items, like ROMs, 4G will take up more battery than 3G even though it will certainly take longer on 3G to accomplish the same thing.
And for what it's worth, I do get a good 4G signal while at work too, so it's not like it's bouncing back and forth between 3/4G.

From my own personal experience;
Wifi>3G>4G
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Wifi>3g>4g here as well
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jeffro18 said:
Wifi>3g>4g here as well
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Same... 4g def kills battery quicker
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Imho I think it is modem/kernel/ rom related. I certianly think there was a period that wifi was sucking the life from my phone and 4 g was sipping. Presently I think I am doing 3g>wifi>4G...but I have seen this flip arround on diferent versions.
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Eclair: wifi > 3g > 4g*
Froyo: 3g > wifi > 4g*
Gingerbread: 3g > wifi > 4g*
*Was only available when I traveled to a city with it. Closest was ~400+mi away. Lame, I know. Stupid Sprint.
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Thanks for all the replies (literally). I've seemed to notice exactly what your saying though, I was just wondering because I heard somewhere 4g drains less battery in high signal areas. I usually get 2/3 4g bars, so id say mine is ok, but it definitely drains faster than 3g
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It doesn't make much of a difference for me. Probably though because my school is so close to a 4G tower? I mean I can literally see it.

4G is a seperate radio so would require more power. 3G is tied to the CDMA radio. Wifi uses almost no power when connected. So I get days of standby on weekends at home on wifi.
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kennyglass123 said:
4G is a seperate radio so would require more power. 3G is tied to the CDMA radio. Wifi uses almost no power when connected. So I get days of standby on weekends at home on wifi.
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Funny, my device gets the opposite with 3g vs wifi. My sleep policy is set on 'never', but wifi has drained the hell out of my batter since Froyo. It's nearly as bad of a drain as 4g, when I was in a 4g area to test.

+1 and also since froyo. How I long for the wifi battery sipping days.
nikon120 said:
Funny, my device gets the opposite with 3g vs wifi. My sleep policy is set on 'never', but wifi has drained the hell out of my batter since Froyo. It's nearly as bad of a drain as 4g, when I was in a 4g area to test.
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4g spectrum runs at a higher frequency rate than 3g. Therefore, 4g will drain ur battery a lot faster, especially if u have weak or weaker signal strength. Wifi, is low aplitude frequency rate, meaning..it an open frequency , therefore, does not require much power for high speed. 3g is moderate frequency rate. Just to clearify..3g and 4g are cdma, depending on carrier. Support information regarding can be allocated at www.phonescoop.com
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androidmaster1 said:
4g spectrum runs at a higher frequency rate than 3g. Therefore, 4g will drain ur battery a lot faster, especially if u have weak or weaker signal strength. Wifi, is low aplitude frequency rate, meaning..it an open frequency , therefore, does not require much power for high speed. 3g is moderate frequency rate. Just to clearify..3g and 4g are cdma, depending on carrier. Support information regarding can be allocated at www.phonescoop.com
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I have no doubt you are technically accurate and it could be the implementation and how they are managed. If I take a full battery and leave one of these on at a tome...as of stock froyo (I think some roms may have had different results) and all gb 3g certianly is usong about half the battery being used as 4g and wifi consistantly uses more.
Sammy should talk to u guys n get theeir sheit fixed.
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Djinn23 said:
I have no doubt you are technically accurate and it could be the implementation and how they are managed. If I take a full battery and leave one of these on at a tome...as of stock froyo (I think some roms may have had different results) and all gb 3g certianly is usong about half the battery being used as 4g and wifi consistantly uses more.
Sammy should talk to u guys n get theeir sheit fixed.
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it also has to do with power time managment in the kernels. i discovered that between the different kernels i have tried and xda. you just have to play with the different roms and kernels and see which gives you better results.

Sprint Automatic Connection

Is there any real benefits for having this on??? all it does it turn on my wifi all the time and drain my battery.
Thanks in advance

Maybe in an lte area, but it is awful otherwise. Number one battery drainer, and even when disabled will sometimes still run in the background
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Unjustifiable pathetic signal stats constant at my home

What would u do if u seen these specs
It is the worst it can get
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id switch carriers or go outside or get a repeater

Just came from atat which had grade speeds and signal always to come back to sprint cause they are way more affordable... But I knew what I was getting back into... It's not so much sprint its Samsung I made a thread about why all Samsung phones specifically Samsung have bad signal
When compared to a photon or htc in the same coverage area.... I must be in a complete dead zone only luck I had is with atat I've tried every carrier. Even vzw
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What's a repeater
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Here is a battery drain update is this normal in 2hr 21min barely using phone 36% drain
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http://www.repeaterstore.com/products/repeaterkits/wi-ex/wi-ex-zboost-one-yx-400.php
not sure if thats exactly it, but its a signal booster you can install in your home to get signal in areas you cant.
I just got my gnex yesterday and im on ATT and get slightly better signal, i can actually text sitting at my computer, my inspire i had to hold near the window to send/receive.

lojak29 said:
Here is a battery drain update is this normal in 2hr 21min barely using phone 36% drain
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When you don't have a stable connection your phone is always scanning for a better connection. So it will use more battery.
You might want to try updating your APN settings, and possibly try using 2g only at your house.

Update!!
In only just 2hr and 10 min since last update at 64% I've gone down from 64%to 14%
Hardly using phone
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I'm sorry? It sounded like you knew what you were getting into when going to sprint. So not sure what you want us to tell you.
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lojak29 said:
Just came from atat which had grade speeds and signal always to come back to sprint cause they are way more affordable... But I knew what I was getting back into... It's not so much sprint its Samsung I made a thread about why all Samsung phones specifically Samsung have bad signal
When compared to a photon or htc in the same coverage area.... I must be in a complete dead zone only luck I had is with atat I've tried every carrier. Even vzw
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ive always had great signals with samsung phones. dont trust the signal bars btw. i bet its sprint since ive read countless people complaining about their signal.

lojak29 said:
Update!!
In only just 2hr and 10 min since last update at 64% I've gone down from 64%to 14%
Hardly using phone
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As someone else said, low signal means the phone works harder to maintain/find signal, which results in more battery usage. I work in what might as well be a faraday cage because of EMI from all of our test systems. If I don't keep it plugged in while I'm at work (or go into airplane mode), it won't last the day, even if I don't touch it.
Find a place with better signal, use a repeater/booster, use airplane mode, or keep it on a charger. Those are about your only options.
Edit: You can also use an app called OpenSignal (free in the play store) to see what tower your phone is connecting to. That could tell you if you just simply don't have a tower close enough.

lojak29 said:
What's a repeater
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It's kind of like tethering. It picks up on the signal and "repeats" the signal, except now since you're right next to the cell tower (repeater) you get better signal.

WiFi draining my battery?

OK so here's the thing, I've noticed that when in at college (or school for some) my gnex is on standby most of the day with mobile data turned on even though its 2G area, now I manage to make it home with at least 80% and usually end up recharging it however the peculiar thing is that with WiFi on it drains about 1% per minute at least. Seriously its truly ridiculous, anybody else had this problem or have any ideas on what to do?
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Possibly a lot of traffic on your network? Lots of broadcasting happening causing wake locks. All I can think of.
Also what's your signal strength like? Both cellular and wifi.

Cellular wise its always full bars wherever I go and I turn off mobile data when I get home, WiFi wise I'm always on 2 bars in a 60mb connection.
Traffic isn't that high maybe one other person on the laptop...
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are you root ??

Divyesh42 said:
are you root ??
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Nope, 100% stock.
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Question. How to activate lte only?

With CM10.1?
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there is no such thing as LTE only, and i doubt it will exist until LTE coverage is more widespread. LTE also runs off CDMA, i don't know the technical information but i don't think it would save any power, compared to using CDMA only. if you want to run LTE just select CDMA / LTE and it will stay on LTE whenever LTE is avail.
if i was to turn my phone on LTE only and do my usual day of driving i would have no signal for 70% of the day, and that is driving around the GTA, which is canada's heaviest population density. so even if u happen to be somewhere where u usually have LTE, this is extremely rare that's why the mode isn't out yet.
cdma / lte priority goes as follow
4g lte - highest priority
4g - 2nd priority
3g - lowest priority
if you are looking to save battery and not performance, use 2g only for extreme battery saving, or CMDA only for moderate battery saving while still having good performance.

.... besides you couldn't make phone calls on lte kinda defeats the purpose of a phone.
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Thanks for your informative explanation.
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Swetnes said:
.... besides you couldn't make phone calls on lte kinda defeats the purpose of a phone.
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good point