Develop Bugs

[Q] Battery testing

I've read in a bunch of other threads that people are getting awesome battery life out of their Z or G2. Mine is okay-ish. I had a hero before which seemed a bit better. there are a couple of odd things I thought I'd check tho...
First, the keyboard backlight turns on and off at seemingly random intervals while open. Anyone else got this?
Also I've seen screenshots of the battery use screen showing how much power is used by each system. The screen always is at least 75% on mine, even when its been sat in a pouch most of the time with just a couple of messages or a phone call- this seems quite different to other peoples experience.
Is there any reliable way of benchmarking the battery to check? If not, does anyone fancy helping me test?

im actually suffering from the same problem,
i thaught it was because the first week i was using it lots thats why the battery wasnt lasting long, but on monday morning with a full charge ,
only with a few calls , texts and checking train times on TFL , by the time i got to sleep that night the battery was on 30%
I was shocked , checked the battery useage meter , everything was below 5% except the screen which was was on a shocking 80%
I Then formatted the phone , restored to default , removed everything ,
set the brightness to lowest useable which was just above the 'o' on 'ok' in the brightness screen let it charge to 100% for use on tuesday.
Tuesday - Morn before i left for work it was on 100% , the only thing i had setup on it was email, brightness on low - but useable .
Screen must have been on onliy for 20 mins throughout the day
Got home , battery was on 45%
battery useage - again display was taking over 70% of it when it was hardly on .
I am RMA'ing this one tommorow
I think its an issue internally with something shorting on the display, battery shoudlnt be draining that much if its not on
Out of interest was yours a UK Desire Z ?

Yep. This sounds exactly like my situation in every detail. I couldn't believe reports from other people saying their batteries were at 92% after 12 hours- even without using mine at all this wouldn't happen.
Mine is a UK desire z, from play.com. I think its over 14 days so RMA might be tricky, although I know I have lots of rights thanks to distance selling regulations. Hope I can exchange without too much fuss.
Ooh, just thought of something. When I set the brightness really low on mine (below 20% or so) the screen flickers slightly. It's most visible on a totally white page. Does yours do the same? Faulty backlight maybe?

pizza65 said:
When I set the brightness really low on mine (below 20% or so) the screen flickers slightly. It's most visible on a totally white page. Does yours do the same? Faulty backlight maybe?
Click to expand...
Click to collapse
Just tested mine, definitely no flicker.
Now my experience with the battery....
I play about half hour - an hour of games every day, plus about up to an hour wifi, using the xda app throughout the day using data, 10 - 15 txts and a few 1 - 2 min calls... Not too heavy usage.
I'm getting 30-36 hours, I'm happy....
BUT..... I have not plugged in through mains once yet. I read that charging through USB gives better performance... so far that is looking true.
I got the same kind of time out of my Hero using mains but that was with zero game time.

yes! pizza65 , i noticed the flickering too! , i thaught it was just my eye being twitchy ! Noticeable on internet browsing on low brightness! .
Mine was from handtec .. (amazon delayed too much) so changed last min,
it comes with a 2 year manufacturer waranty i think so even if you take it up with HTC direct they should be able to help if play dont.
I tried a diff radio and rom , but it made no difference.
Maybe the UK batch is still faulty , wasnt that the reason why it failed google testing and got delayed for release here?
Whats your hinge like ?
ddot what network are you on ?
same to you pizza65?
im on 02 , i dont think it is a network radio issue with switching of hspda/3g to 2g signals as it does say cell standby battery useage is around only 6% , but then again the phone could be false reporting

pizza65 said:
Is there any reliable way of benchmarking the battery to check? If not, does anyone fancy helping me test?
Click to expand...
Click to collapse
Not really if you want realistic real-world results with data connectivity etc. It varies too much since everything counts like signal strength.
You can always just turn off everything and burn the battery with a movie but first thing you should do is a few dozen full discharges before you do anything. I've noticed that HTC (and other manufacturers too) pre-use their batteries ie. charge and recharge them until they're optimal for consumers, hence the whine about bad batteries when people buy new phones (and in reviews as well).

I'm on Orange, I don't think its network because, as you confirmed, the "battery use" screen says that the screen is draining all the power. If nobody else gets a flicker on low brightness (it can take a few seconds to see it, but once you notice it...) then it looks like our screens are the culprit. Maybe.
I've deleted batterystats.bin and fully charged, so ill give that another chance before talking to play.
Ddot, what percentage of the drain is from the screen on your z? Also, if you press 'display' in that menu it will say how long the screen has been on, what does it say?

I have the same issue with battery performace. I've moved to Desire Z from my old Desire which had AMOLED display. On my old one, the display taked 5-8% of battery. On Desire Z I have minimum 50%, but ussually ~70%.
After reading that some people can use their DZs like "for two days of heavy use (gaming, browsing)" or "5% for 6 hours" I can't understand how?
Comparing to old Desire my DZ have poor battery performance. But the specs tells it must be much better.
I'll publish my battery usage stats after some days. Maybe it'll be useful.
Sent from my HTC Vision using XDA App

In additional.
I have stock Sense ROM with root and S-Off. No overclocking kernel. My SetCPU profile is set for 245 MHz when screen is off.
Sent from my HTC Vision using XDA App

Interesting read...desire users, amoled etc. cynogen mod, 2.2 android:
http://code.google.com/p/cyanogenmod/issues/detail?id=2012
Another snippet:
http://www.goodandevo.net/2010/08/h...ry-and-possibly-double-your-battery-life.html
a variation:
http://forum.xda-developers.com/showpost.php?p=6796078&postcount=1
i'm in similar shoes like you guys. i'll try these.
I'm using SetCPU 245MHz idle, stock Z rom.

tbalden said:
Interesting read...desire users, amoled etc. cynogen mod, 2.2 android:
http://code.google.com/p/cyanogenmod/issues/detail?id=2012
Another snippet:
http://www.goodandevo.net/2010/08/h...ry-and-possibly-double-your-battery-life.html
a variation:
http://forum.xda-developers.com/showpost.php?p=6796078&postcount=1
i'm in similar shoes like you guys. i'll try these.
I'm using SetCPU 245MHz idle, stock Z rom.
Click to expand...
Click to collapse
Very interesting, thanks for sharing

And a really "geek" method here quoted from cyanogenmod issue:
Comment 27 by david.j.erickson, Aug 19, 2010
Now, I was still having abnormal drain on my battery. As suggested in the Wiki and also confirmed in another cyanogenmod post, clearing the battery stats can help. I followed this procedure:
Fully charge the battery, says Full and 100% under Settings - About phone - Status.
Reboot into recovery, wiped battery stats. Phone still plugged in at this point.
Reboot into rom, checked to make sure battery was still Full and 100%.
Unplugged phone.
Killed it, used Maps on Wifi and messing around. Killed it in about 3 hours or so.
Tried turning it on a couple times to make sure it was *dead* dead. It still tried to boot, but couldn't complete without shutting off.
Plugged phone in, booted it up. It may be better to not turn it on until it is fully charged, but this is just what I did.
Let it charge overnight, next morning took it off charger since it was full.
I have noticed pretty good battery life since doing this. This morning on my bus ride in I pretty much constantly played some Storm8 games and used Listen with Bluetooth, was only down to about 82 or 84%, can't remember. This is on par with previous CM release for me.
Not sure why this rom in particular had so much worse battery drain out of the gate, and not just for me. Fortunately it seems correctable. Maybe if a few of you could give this a try and see if it improves your battery performance we could conclusively say battery calibration is the solution.
Click to expand...
Click to collapse

What about the flicker? Can anyone confirm that?

I have a UK (read: QWERTY) Desire Z, first batch.
I tried reprodocuing the flicker by lowering the brightness completely and looking at a blank white page in the internet browser. Couldn't see it. Maybe I wasn't looking hard enough.
That said, I'm not getting the great battery life that most seem to be getting, and the stats always show the Display as being the number one drain. HOWEVER, it doesn't seem quite as bad as you guys are saying.
Right now, it looks like this:
Unplugged for 18 hours and 16 minutes, battery at 36%
Display accounts for 41% of the drain
It has been on for 50 minutes.
(stock ROM, running an IM client 24/7, synced to three email addresses... Typoclock seems to use 2% of the battery every time as well, which seems relatively high for such an innocuous little widget)

Yeah. I have some slight flickering too, slight when low light set.
Uk stock.
I dont think high display percent is an issue too much reading cyanogen issue comments.if you use nothing but low cpu burden apps, display should eat most.
Also if i have it off, power is eaten by cell standby.
Im still hoping for a settled battery log mentioned in forums.

My 2 cents:
If I "use" the phone, I have to plugin it every night.
If I do not "use" it (nobody calls that day, no browsing or GPS (Just work!)), I plugin it every two day (ex. mon - wed - fri).
The display is always 65-80 % of the "drain problem".
Today the stats are:
7.30 am: full chargerd 100%
7.30 pm: display drains: 70% in 1h : 21m - battery at 20%
I leave automatic background gmail sync on (only daylight, I use the "Flight mode" overnight)
No bluetooth, no wifi, no gps, brightness 35-40%

lordevol said:
I leave automatic background gmail sync on (only daylight, I use the "Flight mode" overnight)
No bluetooth, no wifi, no gps, brightness 35-40%
Click to expand...
Click to collapse
No phone either.

I'm on a North American Desire Z and I see the display using 70%-80% of the battery when I have the display on for approximately two hours out of the day. I keep my display quite dim too, at 20% brightness.
I'm also running everything stock. No root, no custom ROMs, no anything.

Isnt display percentage actually the display driver cpu time eaten?its just a theoretical value isnt it, not watts gone? It seems obvious that its eating a lot as it refreshes all the time regardless of display light level.

My screen on is only 33% today, im sure its usually higher though. Maybe its due to me flashing stuff all day. Ill do a full charge tonight and report back Sunday.
...bought from e2save, a part of carphone warehouse.
Sent from my HTC Vision using XDA App

[Q] Awful battery life. Should I replace my phone?

As I posted in another thread:
I am lucky to even get 12 hours with minimal use. No calls, just some texting and maybe browsing my bank website. Screen is always the killer for me, even on 20% brightness. If I go lower the screen actually flickers.
I bought the red HTC Chichitech batteries and they didn't help me at all.
Tried overclocking module, didn't change much.
The only app that ever shows any significant battery use (over 5%) is Maps, when I use maps.
Click to expand...
Click to collapse
I am rooted, S-OFF, using the Sense Modaco ROM. Battery usage was no better with the Stock Bell Rom before rooting or S-OFF.
My main concern is the screen flickering at low brightness. it's as if it's unable to decide on a specific level of brightness and makes me question if it's actually saving any power.
I set my phone to Auto brightness and I am going to see if that is actually worse of if it's on par with 20%.
Ugh - just realized there is another thread pretty much all about this. I thought it was a different issue. Still, does anyone know if there is a better batch of phones or something? I have a FutureShop warranty so it'd be easy enough for me to replace if it will actually provide a solution

No-one has posted anything, to my knowledge, about a different batch of phones having better battery life. I would check out the other threads about battery life (including those on the G2 side too) and see if you can get yours to last better. But it could just be something faulty on your phone/battery.

Auto-brightness would make it even worse..because there is some type of bug or something that isn't making it function like it should. I was also getting terrible battery life until I followed some of these steps: http://www.goodandevo.net/2010/05/20-tips-to-improve-htc-evo-4g-battery-life.html
Biggest killers are any widgets that are constantly updating..or facebook/twitter apps that are constantly updating. As well..i recommend SetCPU to underclock your phone when your screen is turned off. This should also help with conserving battery life along with some of the steps provided in that link.

steviewevie said:
No-one has posted anything, to my knowledge, about a different batch of phones having better battery life. I would check out the other threads about battery life (including those on the G2 side too) and see if you can get yours to last better. But it could just be something faulty on your phone/battery.
Click to expand...
Click to collapse
I am considering waiting a month or so and then having mine replaced. Unless I managed to figure something else out. My HTC Legend had better battery life.
Rickroller said:
Auto-brightness would make it even worse..because there is some type of bug or something that isn't making it function like it should. I was also getting terrible battery life until I followed some of these steps: http://www.goodandevo.net/2010/05/20-tips-to-improve-htc-evo-4g-battery-life.html
Biggest killers are any widgets that are constantly updating..or facebook/twitter apps that are constantly updating. As well..i recommend SetCPU to underclock your phone when your screen is turned off. This should also help with conserving battery life along with some of the steps provided in that link.
Click to expand...
Click to collapse
The reason I want to try auto or higher brightness is to see if lowering it was actually saving me any battery life. I am curious if there's a driver or display issues that causes it to use the same amount regardless of the setting. So far I don't seem to be running out any faster @ auto than I was at 20%, but it hasn't been a long enough time to tell for sure.
Also I am unable to do the battery tip for the evo because once I turn off the phone and go to charge it again, it's instantly green. But I am going to try it anyway even though it's green.
Since writing the first post I used the OC module to get my phone to 1.2ghz. I have SetCPU set to run on boot with the onDemand setting. I have a profile that says to slow the CPU when the screen is off. From what I've read it doesn't make a ton of difference with this particular phone, but we'll see...

rewen said:
Also I am unable to do the battery tip for the evo because once I turn off the phone and go to charge it again, it's instantly green. But I am going to try it anyway even though it's green.
Click to expand...
Click to collapse
Yep, that's what I found too, when you try and charge it thinks it's already charged and goes green straight away again. But as you said, worth a try.

I just wanted to report back and say that I had my phone replaced. So far so good:
- No screen flicker issue at low brightness
- Battery has lasted nearly 20 hours with moderate-heavy use (played NFS Shift, setup basically everything on the phone after rooting, installed all my apps, backups, flashed some roms, 20+ texts, 3-4 short calls, showing people random apps.)
If it's not all in my head then this is definitely much better now!

Curious. It seems that everyone who reports the screen flickering problem has poor battery life.
Defective displays?

I feel my battery life is pretty bad as well. I've unplugged the phone this morning at 7 AM. Now it's 2 PM, and I'm at 37%. In between, the only things I've done are: send/receive a few emails and chat on gtalk. Brightness is at 40%, animations are turned off, wifi and gps location off. Using latest Cyanogenmod (6.1.1) and have no screen flicker issues
Edit: 17 minutes later, it's now at 27%

How long have you had the phone for?
Initially the first few days I got the phone, battery life was really bad, could drain in a few hours.
After a week or two of use, I now have reasonable battery life, the phone can last all day with light usage and still have lots of juice left. Actually I think if you make a few calls and a few txts, battery could last 2 days. If you play with it, one day for sure but you need to plug in over night.

(if you're talking to me) It's quite new, just picked it up on Friday actually. Also I've kept on researching, and it seems that poor coverage (like I have at work, from 7 til 3) tends to drain the battery even more, since the phone keeps switching between HSPA, 3G, etc.

I had my first one for about a month at least. This replacement was from Saturday.
Today I've had my phone unplugged since 8am, it's 5:30pm and I have 45% battery left, but the screen is the #2 user. Standby is #1 @ 40% of my battery usage, due to over 4 hours of time without a signal. The screen is only 24% and has been on for 48 minutes. Voice calls is #3 at 23% battery usage, with 23mins of calling.
My other phone would have died by now.
Also I spent an hour of streaming bluetooth audio to my car. Bluetooth doesn't even register on the battery usage. I've never seen it use more than 2% and it's always on. I am not sure why people say it uses a lot.

Just want to share my experience.
I too had poor battery life. Stock Bell ROM. Got to 3:00 pm and it used to die. Use this for work. Pushing data all day from Exchange server, bluetooth on all day because I'm in and out of the car, talk on average 30 minutes per day, texting, surfing, tethering, blah blah. Believe it or not, my old Omnia II would get me thru the day no problem.
I was also tempted to return it. But I decided to try a few things. Installed Set CPU and a task killer at the same time. Shut down as many tasks as possible on start up. Widgets and accounts, except Exchange-push, run and sync every hour. I get about 40% battery by dinner. I am happy now .

I'm quite happy with my Desire Z's battery life, It lasts for about 36 hours with moderate use. I have Juicedefender and Ultimatejuice installed, data or wifi are opened only when an app needs data connection, this increased my battery life by 10 hours or sth like that. Nice app.

I had terrible battery life until I went overseas. It is a stock Bell ROM, but I arrived in Spain Monday and am using a Spanish SIM card.
My battery life has increased from 14 hours with Bell's 3G signal to my current 27 hours and 35% remaining battery using GSM and WiFi always on. Funny thing is that no matter where I am it says the screen is by far my biggest power drain.

Where did you buy your Desire Z and how did you get it replaced? I'm with Bell and they would take mine to send out for "repair" but not sure if that will do anything. This will take 3-6 weeks apparently and I'm not sure if they it is worth it.
I'm running 10 hours with that I consider fair usage (few calls, text, map/gsp, and facebook.) My display is the highest battery usage at 60% and on for about 1:45h. I'm very disappointed.

Hey,
it's the same with my G2.
Max 24h.
I've standard ROM installed.
No WiFi.
Brightness to about 30%.
Juice Defender is installed and I'm surfing and just the regular stuff, but even if it's just in standby, it's taking a lot of power (display takes most)
Best!
-blubberor

architect_ said:
Where did you buy your Desire Z and how did you get it replaced? I'm with Bell and they would take mine to send out for "repair" but not sure if that will do anything. This will take 3-6 weeks apparently and I'm not sure if they it is worth it.
I'm running 10 hours with that I consider fair usage (few calls, text, map/gsp, and facebook.) My display is the highest battery usage at 60% and on for about 1:45h. I'm very disappointed.
Click to expand...
Click to collapse
I bought mine at FutureShop since I didn't think Bell would let me without buying at least a month of service (or being an existing customer). I also purchased FutureShop's extended warranty which is how I was able to get it swapped for a new one so quickly.

I use the extended battery for the evo. Lasts about 1.5 days with ass loads of use. Just have to trim the plastic edges a bit.
Sent from my T-Mobile G2 using XDA App

I have a couple of those red chichitech batteries but I wasn't able to notice any improvement with the problem phone.

My Desire Z also has a flickering screen at lowest brightness, and with moderate use it dies after about 12 hours max. Even on lowest brightness the screen ueses 59% battery. I rarely manage to make it through the day without having to charge the phone. Im on stock ROM with latest OTA (1.72) btw.
Gonna have it replaced next week just cause of the flickering screen. Has anyone tried the 1700mAH battery from seidio?

[Q] Display taking up WAY too much battery life.

I am using Super Z Sense enhanced v3.1 with incredikernel installed. I've used my phone for around 10 minutes of browsing, and the rest of the time the screens been off. It's been unplugged for 3 hours 20 minutes. I unplugged it after fully charging it and now its at 68%. The display has been taking up 79% of the battery, even though the screens been off most of the time. What do I do?

lower the display?
and every ROM displays things differently. If your battery isn't affected don't sweat it. I personally haven't run that ROM so I can't help you there.

It is on miminum brightness, and my battery is greatly affected. Not using my phone I have maybe 12 hours of standby battery life.

I'm having the exact same problem..... backlight is turned off and my display is using 79% of the battery.... I'm in cyangenMod 6.1...
any ideas?

OlympusGod said:
It is on miminum brightness, and my battery is greatly affected. Not using my phone I have maybe 12 hours of standby battery life.
Click to expand...
Click to collapse
I've replicated the results with a brand new battery from Verizon (after several charges, the capacity should be fine now) and both CM7 (Build 45 from Gridlock) and Uber Z RC2 and several different kernels. I think this is just the design of the phone, or I got two defective batteries in a row

There's an important piece of information missing here... Is your Incredible's screen the SLCD type or AMOLED type? SLCD screens don't use any more power due to what's on the screen due to the type of backlight (same light illuminates the whole screen), whereas on an AMOLED display, each pixel is its own source of light. That's why on an AMOLED display, darker themes offer better battery life as the pixels aren't having to light up as much to display the content.
Might need that info.

I have a slcd display....
Sent from my ADR6300 using XDA App

I've got an Amoled

Another important question: 3G or wifi for most of the day?
I can get 6-8 hours out of a standard battery running on 3G with wifi disabled, but if I am on wifi I can get 18-20 hours...

I spend most of my time in 3g.... I'm in the nightly cm6 rom with #21 kernel now and I'm getting the 20 hours I was hoping for.... life is good.
Sent from my ADR6300 using XDA App

Wifi on maybe 20% of the time.

OlympusGod said:
I am using Super Z Sense enhanced v3.1 with incredikernel installed. I've used my phone for around 10 minutes of browsing, and the rest of the time the screens been off. It's been unplugged for 3 hours 20 minutes. I unplugged it after fully charging it and now its at 68%. The display has been taking up 79% of the battery, even though the screens been off most of the time. What do I do?
Click to expand...
Click to collapse
I had the same things running Z ROM's. I switched to Myn's Warm TwoPointTwo, and the display is low, right now 7%, and same usage patterns. 3G all day at work (8 - 5), Wi-Fi all night until morning.
Maybe a phone call a day, maybe...emails/TweetDeck/texts/web browsing otherwise. It seems that that's the way Z ROM's on this phone run...?

I too have this problem on any aosp rom ive ran on it whether it be gingerbread or froyo. The display will take up a good 80 percent battery life, making my Seidio 3500mAh battery able to barely able to get through the day. However, on a sense rom the display takes maybe 5 to 7 percent and the battery will last 3 or 4 days. I was wondering if anybody managed to figure out a solution to this, as I want to run gingerbread but can't due to the battery issue.
My incredible is of the slcd type. Any solutions worth trying?

having the same issue with CM7 nightly builds... display using over 70% all the time... terrible battery life. otherwise CM7 seems very stable, thanks to all those involved in making it happen, you guys rock!
any help with the battery/display issue? thanks

Don't forget, these are percentages. Each rom/kernel combo calculates the percentages differently. Your may be getting actual better life, but the meter says 70% of the total usage because the Android System and other services aren't using nearly as much battery vs a stock kernel/stock rom.

The problem we have here though is that the battery life is greatly affected. Stock battery gets maybe 12 hours standby on a fresh install and screen mostly off. My Seidio 3500 barely makes it through a full day on any aosp rom yet lasts 4 days on a sense rom.
Sent from my ADR6300 using XDA App

Sync
Another couple players in battery life besides display are frequency and quantity of accounts synched, as well as GPS on/off.
Not magic bullets to battery savings since Display is the resource hog in this instance, but you may (should) be able to squeeze several additional percentage points out of the battery by tweaking the synch quantity & frequency, as well as toggling GPS to off unless it's needed.
Mindblowing if the 3500 doesn't last a day on a full charge.
Absent that, I've read varying opinions on whether the xx.9 radio is a battery eater.

I figured out my solution. Update your radio. 2.15.00.07.28 doesn't like aosp roms, so I upgraded to 2.15.00.11.19. MUCH better on the battery life (doesn't run my Seidio 3500 dead in just one day, more like 3 now) although as a previous poster suggested, the percentages in the battery life display are just that. Percentages. The display still shows ~50% of the use, however the life has returned to normal.
Link to radio images: http://forum.cyanogenmod.com/files/category/25-htc-incredible/
And I know some of you are wondering "How in the f&$* can the radio affect the displays power usage?" To be honest, I don't know the answer to that either. I just tried this on a hunch and it seemed to work. Full day of not exactly light use (browsing while wifi tethering, some bright sun use as a navigation device, texting all day) and no forced attempts to be frugal with power (letting the screen time out on its own instead of immediately poking the power button, accidentally left wifi on most of the day, automatic brightness with a lot of full sun use...) and I'm still over 60% after 14 hours. Your mileage may vary.

Why does the Samsung Epic Super Amoled Screen uses some much battery life.

I was wondering why the samsung epic screen consumes so much battery life. I have my screen fully dimmed and on top of that the screen filter is around 50% and my screen still comsumes 80%-90% of my battery life. Is anybody working on any mode that will help this problem or is it because the samsung epic has a Super Amoled screen which comsume more battery life. Great phone I am just hope somebody can mode the screen consumption of the battery life. The battery is good with a custom Rom I just wish it could be even better.

You're missing the point. The fact the screen uses 80% of the battery means nothing more than that it draws more power than any other part, there isn't anything wrong with that. The screen is on so it uses power, pretty simple. Now if the radio was using 90% of the battery that would be bad.

063_XOBX said:
You're missing the point. The fact the screen uses 80% of the battery means nothing more than that it draws more power than any other part, there isn't anything wrong with that. The screen is on so it uses power, pretty simple. Now if the radio was using 90% of the battery that would be bad.
Click to expand...
Click to collapse
Well that is true. I was just wondering if they cause make the battery consumption from the screen a little bit less taxing. I am grateful the the Radio is not comsumption a lot of the battery life.

Weird thing I had on my htc hero before an update was screen battery use was super high too (same levels seen here). Then after some update, it was a much more normal range (somewhere around 30-40% maybe?) consistently. I'm wondering if it's really that much of the power usage or just a bug in the reporting. Butt smoke is done blowing by me now.

The more it sits idle, the lower the percentage gets. It's a relative statistic.

Well, I guess its because the radio uses a lot less, it has to add up to 100 percent, and if you're using the display that time, then its probably what is using up the most battery

gokuman56 said:
lol.. super almond............ I like the new name he gave to the screen
Click to expand...
Click to collapse
Lol I hadn't even noticed that one.
My screen takes up about 90% of the battery usage as well, but that is only since Froyo. On Froyo, the battery usage only shows Display at about 95% and Cell Standby at the other 5%. On Eclair it would show everything else that would run throughout the day like live wallpapers and whatnot. Froyo only shows Display and Cell Standby, but oh well, it doesn't mean that it's killing your phone quicker, since I upgraded to Froyo and got roms and everything installed, I get about twice the battery life.

I think you have to be NUTS to not like the Almond screen !!!

The battery life is good.
jdelano said:
I think you have to be NUTS to not like the Almond screen !!!
Click to expand...
Click to collapse
LOL!!! The joke is on me!!! I do love the display. I am just getting greed for more battery life that is all.

Yeah, as was stated above, it's just a relative statistic. The screen would naturally take up more of the total 100% allocable battery life. Makes sense, since the screen is always on when you do anything to your phone. Try restarting your phone, then play your music player for a while with the screen off. You should see that statistic change considerably.

The reason the screen takes up such a large percentage of battery life is because they made the rest of the phone so efficient!
I barely used my phone yesterday. It has been on for 1 day 17 hours since I swapped batteries and I still have a 36% charge. The screen has been on for 1 hr 59 minutes in that time, but it accounts for 71% of my battery usage. When you aren't seeing the TWS bug, everything else in your phone draws an incredibly small amount of power which makes the screen look like it is using a lot of juice.

its the price you pay for hd quality i guess

Screen filters use more voltage to apply so don't use them. And it is an app that is always running. This is an amazing screen.

[Q] VZW GN battery drain + heat questions

I'm coming from a thunderbolt with an extended battery. I'm used to crappy battery life, and indeed I lose about a percent an hour playing music on my galaxy nexus with is way better than my thunderbolt.
The issue comes that when I have the screen on I lose about 1-2% a minute, even if I'm just reading an ebook. Calling is fine, DOWNLOADING/STREAMING is fine, but the screen on just kills the battery.
It also gets very, very hot on the upper portion of the screen, but doesn't if I'm downloading something with the screen off.
My question is, is this normal?
As well, the screen has a yellowish tint when looking at it directly, but takes a blue tint at a very slight angle (annoying) is THIS normal?
I want to know how much arguing and yelling I'm going to have to do when I try to exchange this phone.
Writing this took me from 22% to 13% D=

I'm new to Galaxy Nexus phones, but i've been here long enough to know that the yellow tint and blue side view tint is a manufacturer defect.
My battery drain, too, is really bad.
currently, it's 57% of my battery drain, but its been as high as high-60's before.
Facebook comes in 2nd, killing 10%. Almost makes me want to uninstall it.
Today, I noticed it was hot when it was idle in my pocket throughout the day.
It could be bad heat dispersion because of the slim design or cpu usage.
I feel your pain though. My battery went from 100% to 56% in 5H 20M of idle time and 40M of texting / light surfing usage.
Mobile data was off for the 5 hours and 20 minutes, too. >.>

My phone does all that too. Including the upper part getting hot. I would like to know more about this too.

What's your brightness set at?
Sent from my Galaxy Nexus using Tapatalk 2

Mines about 60%

The CPU is in the top right hand corner, mine has hit 60°C before, still fine.
Having your screen on and at a high brightness will absolutely murder your battery and will help raise the temperature.
Screen will always be the highest drain as it is big.
Lower brightness to save battery and delete that damn Facebook app, it stops your phone going into deep sleep which drains your battery.
As for the yellow tint, flash a custom kernel and modify the colours.
My whites are perfect, not a sign of yellow.

My brightness was set to auto, but I predominately work/play in dark rooms, when I wrote the post yesterday over a period of a couple minutes it was in a completely black room.
This is all in relation to the Thunderbolt, though. The screen uses more battery, but I thought AMOLEDs are very efficient (black wallpaper, yay minimalism!). I'm getting about the battery life as my Thunderbolt did with its stock battery, but considering it was the first LTE phone in the US I would think it would be a more inefficient and cumbersome radio chip. It doesn't get nearly as hot as the Galaxy Nexus did, which is why I am so alarmed.
I don't want to have a phone that I can only use the screen for an hour and some change, and while I don't expect to use it solidly for eight hours, I did expect it to last at least as long as the Thunderbolt did. Is there a larger extended battery than the one sold by Verizon that adds very little bulk? I may try investing in one.

afinita said:
My brightness was set to auto, but I predominately work/play in dark rooms, when I wrote the post yesterday over a period of a couple minutes it was in a completely black room.
This is all in relation to the Thunderbolt, though. The screen uses more battery, but I thought AMOLEDs are very efficient (black wallpaper, yay minimalism!). I'm getting about the battery life as my Thunderbolt did with its stock battery, but considering it was the first LTE phone in the US I would think it would be a more inefficient and cumbersome radio chip. It doesn't get nearly as hot as the Galaxy Nexus did, which is why I am so alarmed.
I don't want to have a phone that I can only use the screen for an hour and some change, and while I don't expect to use it solidly for eight hours, I did expect it to last at least as long as the Thunderbolt did. Is there a larger extended battery than the one sold by Verizon that adds very little bulk? I may try investing in one.
Click to expand...
Click to collapse
This. I also had a thunderbolt. I expected this Nexus to out perform it in the battery field but no way. My thunderbolt with stock battery would last from 6am to 6pm which was fine for me. Id just start charging when I got home at 3. This thing when I get home its at like 3% and these past 3 days Iv had the nexus off half the day to save battery while I took AP Tests.
This phone is perfect, except for the battery. As for brightness anything under 60% gives me that yellow tint. Im using the Apex rom right now. I dont see any custom color settings. What rom do you guys use?

afinita said:
I'm coming from a thunderbolt with an extended battery. I'm used to crappy battery life, and indeed I lose about a percent an hour playing music on my galaxy nexus with is way better than my thunderbolt.
The issue comes that when I have the screen on I lose about 1-2% a minute, even if I'm just reading an ebook. Calling is fine, DOWNLOADING/STREAMING is fine, but the screen on just kills the battery.
It also gets very, very hot on the upper portion of the screen, but doesn't if I'm downloading something with the screen off.
My question is, is this normal?
As well, the screen has a yellowish tint when looking at it directly, but takes a blue tint at a very slight angle (annoying) is THIS normal?
I want to know how much arguing and yelling I'm going to have to do when I try to exchange this phone.
Writing this took me from 22% to 13% D=
Click to expand...
Click to collapse
Download from toolbox lite and use it to disable some apps from loading at startup that you know you don't need. This got rid of the issue for me. Installing Franco kernel further helped my battery. I am on stock rom.
Sent from my Galaxy Nexus using Tapatalk 2