Develop Bugs

How`s my battery life ?

I just got the Desire last week, and trying to get the most out of the battery as I can
I have the ROM from HERE:http://forum.xda-developers.com/showthread.php?t=741775
I have the nexus 1 animated wallpaper ON
Screen brightness on AUTO - but timeout=30secs
animations ON
Back-ground data + auto-sync ON
`Always-on Mobile Data`-under Networks is ON
network is WCDMA ONLY - to try stop it from hopping from G 3G H E etc etc
etc.
Data roaming is OFF
Bluetooth OFF
WIFI OFF
didnt use blutooth or WIFI at all in approx 18hours of battery discharge.. for the first 10hrs approxit was idle (overnight) the was light web browsing etc, NOT wifi, just 3G browsing/sms etc
Is this any good?
when the battery is LOW i get a screen showing the battery stats but cannot find that screen when Phone is fully charged ??
cheers

You're alright, I kill mine for either 12h or less, like 6
3g browsing, few calls and some play with the ui

Auto-sync is a real battery killer. Do your updates manually or switch off network connection when you dont need it (with apndroid or similar). Idle battery usage should be about ~1% / hour.
The display(amoled) when in use uses a LOT of power. Keep it as low as possible.
Try to check from time to time if any apps you've installed has any wakelock -bugs. When the phone doesnt sleep with the screen off, the battery usage is way off, like 30-40% idle overnight vs. ~8%.

[Q] Cell standby/ mobile standby battery use?

Well, I searched the forums and haven't found anything specifically for the Defy.
Coming from an HTC Wildfire, which under similar usage had a battery drain split of 30% Cell standby, 30% wifi, 30% system, I noticed that with the exact same usage, the Defy has a cell standby use of over 50% every single day (right now its at 54%). Funny thing is, it ALWAYS says on the battery manager that there is no reception for exactly 50% of the time. This is bull, because I live in central London, and I rarely get less than maximum signal displayed.
Also, I'm on WiFi almost all the time, (WiFi at home and at uni, so the only time it uses 3g/HSPA is on the way there and back, which is less than half an hour).
Has anyone else had this? Any idea what may cause it? I feel like I should be getting better battery life than what I'm getting now, it lasts under a day.

Setting your mobile to 2G only should save you a little power, also be careful with task killers as they can kill some system processes that reduce battery usage, restart you cell to get them back.
I can get 3-4days of battery life with lite use.

Tinderbox (UK) said:
Setting your mobile to 2G only should save you a little power, also be careful with task killers as they can kill some system processes that reduce battery usage, restart you cell to get them back.
I can get 3-4days of battery life with lite use.
Click to expand...
Click to collapse
Thanks for the reply.
I'm not using any task killers, so that shouldn't be a problem.
Any tips on how to switch it to 2G? I can't figure out anything in the network settings.
I'm just thinking that there may be something wrong with my radio receiver/transmitter to be using so much power in comparison to wifi and phone idle (well, compared to my last phone).

You can switch to 2G in wireless & network settings, mobile networks, select network.
But I am already using 2G and I have the same issue, maybe it is a little better than 3G, but still the "cell standby" is using most of the battery.
I saw the battery usage on Galaxy and there is only a very small usage for "cell standby" only about 10%.

i dont know what's going on with your cell,but WIFI is actually the biggest battery taker
,and the strength of signal power really do something to your WIFI chipset battery usage
what about a better WIFI signal....err i tried to change my cell into 2G or even outline
it doesn't work too much as i want
so maybe think about the WIFI problem?

Well, right now the main drainers are as follows:
Mobile standby: 44%
Go Launcher EX: 25%
Wi-Fi: 15%
Display: 15%
Phone idle: 2%
I was in my place all day today, with the phone permanently connected to Wi-Fi, so 3G was not in use. I get very strong cell reception in my place so I either have a spectacularly efficient WiFi module, or a power hungry cell radio. Or the measurements the phone is taking are wrong.
On another note, Go Launcher seems to be taking up a large percentage since its last update (yesterday or the day before), so I'm uninstalling that.

if WIFI should not be the reason and you've uninstalled the update task,i think it should be OK...but what would you do if that doesn't work?
the battery usage of standby was still more than 40 percent,yes?
why dont you download another battery monitor software....?
i'd have a longtime software error in my HTC G3.....it alwaws show me 45percent remaining battery ....

in setting/wireless & network/mobile networks/select network --- it's good to set 2G or 3G do not let automatic because it switches from 3G to 2G if the signal drops. Set 3g and see how it is.
(sorry for english)
mine on automatic in 6 hours battery dropped to 50% in standby, and now it is set to 3g all the time
mine:
Mobile standby: 40%
Display: 22%
Phone idle: 21%
System: 4%
Games, Adw Launcher EX and os: each 3-2%
when in games mine sometimes freezes and i must get out and restart the game???? i dont no why and i dont no if it is ok but ....

Thanks for the input everybody. So all of today I used the phone pretty sparingly at home, and it's been constantly connected to WiFi. Distribution is:
Mobile Standby: 56%
Wi-Fi: 19%
Display: 12%
Phone idle: 9%
Android System 2%
Under Mobile Standby, it still says "Time without a signal: 50%" even though it's definitely had perfect reception all day. I don't know what's causing it to report incorrect numbers :/
Anyway, I switched from auto to 3g auto (I tried 2G, it didn't seem to work properly, Google wouldn't even load).
I guess I'll just ignore it :/
Edit: When not on wifi, it seems to switch between 3g and HSPA quite often. Could this mean something?

iamnik said:
Edit: When not on wifi, it seems to switch between 3g and HSPA quite often. Could this mean something?
Click to expand...
Click to collapse
just like what <stapuv>says when your cell drops any one of the 3G or HSPA singnal another singnal will be switched...it'll use more power for changing network frequently.....but i dont no if this could be the reason for your situation...hmmmm

From my reading the 50% without signal is just a software bug, and can be fixed by toggling on aeroplane mode turning of teh screen for 20 seconds or so and then turning of aeroplane mod when you notice it's happening. the 50% will soon decrease. I too believe that cell standby is using way to much on my phone (always 45%+) even though im browesing the web facebook or playing games for larger peroids of time and those apps don't even show up on the battery usage display and if they do theya re only 2 percent or less.

I have a question for you guys :
I get
46% mobile standby
43% phone idle
10% voice calls
3% display
is this 43% phone idle all right? Doea it mean that 43% of the battery have beed drained by phone in idle state (so maybe not sleeping?) or it means that from all the time phone was idle (asleep) for 43%?

I guess mobile standby use is about the same on everyones phones. That's what I wanted to find out!

iamnik said:
Well, right now the main drainers are as follows:
Mobile standby: 44%
Go Launcher EX: 25%
Wi-Fi: 15%
Display: 15%
Phone idle: 2%
On another note, Go Launcher seems to be taking up a large percentage since its last update (yesterday or the day before), so I'm uninstalling that.
Click to expand...
Click to collapse
After Go Launcher EX latest update, the battery seems to drain a lot faster during idle/standby. Removed that and standby battery usage is better.

Just thought I'd add my finding on this.
My Defy regularly showed Mobile Standard over 50% - but also time without signal was always double the time that the phone had been switched on. For instance if the phone was switched on since a reboot for 1 hour then mobile standby would show the total time as 2 hours but time without a signal as 1 hour.
I had always been running on a battery saver profile (in froyo I was running the custom battery profile) & after every reboot the mobile standby bug would show.
Yesterday I changed my battery profile to the Performance mode & after several reboots the bug hasn't shown up & now the mobile standby shows the total time correctly & zero minutes without signal. The %age use has dropped to be more in line with wifi at around 32%.
I haven't noticed any difference in battery life so as mentioned in a previous post it does look like some sort of bug.

A percentage is a proportion.
Just because it's higher on the Defy, that doesn't mean the mobile standby is using more power than it does on other handsets, it could just mean everything else is using less.
There's no point comparing your Defy's battery usage to any other handset apart from another Defy.

sp8y said:
Just thought I'd add my finding on this.
My Defy regularly showed Mobile Standard over 50% - but also time without signal was always double the time that the phone had been switched on. For instance if the phone was switched on since a reboot for 1 hour then mobile standby would show the total time as 2 hours but time without a signal as 1 hour.
I had always been running on a battery saver profile (in froyo I was running the custom battery profile) & after every reboot the mobile standby bug would show.
Yesterday I changed my battery profile to the Performance mode & after several reboots the bug hasn't shown up & now the mobile standby shows the total time correctly & zero minutes without signal. The %age use has dropped to be more in line with wifi at around 32%.
I haven't noticed any difference in battery life so as mentioned in a previous post it does look like some sort of bug.
Click to expand...
Click to collapse
OK so after a few days of having no issue I rebooted the phone & the "bug" came back today so I guess it wasn't to do with the battery mode as I then put it back into custom battery mode, rebooted the bug went away.
Haven't noticed any difference over the last few days so I'm not going to worry about it.

I have found that DEFY is getting the readings wrong!
Here is how I get this:
1) fully charged the battery
2) started angry birds.
3) ~2 hour later, battery dropped to 60% and usages was as follows:
mobile standby 49%
phone idle 40%
display 4%
angry birds 7%
WTF ?!?! it should be : angry birds ~ 80%
This mettery is tottaly useless!

Personally I couldn't care less what the battery usage breakdown says. In my case 1% battery can standby 1~2 hours or use 3~5 minutes. That's pretty good for me as a charge can last 2 days.

Hi.
Could someone with this "bug" or "battery problems" do a test for me ?
A few hours after you've last charged your phone (or connected to USB) and being sure you haven't rebooted your phone recently (24 hours or so), do the following:
(My phone uses spanish language so the names might be different ...)
Dial *#*#4636#*#*, and choose battery history.
There, choose "CPU Use" and "since last charged".
What are the 4 or 5 main processes appearing in that list, and what's the CPU time they've used (you'll find that by "clicking" on the process' name) ?

How reach 2-3 days of battery with CM7?

Some people claim that, what you do ?

I'm pretty sure there's two possibilities:
1) they're exagerating
2) they barely use it
Peanuts ^^
Sent from my 1Ghz CM7 Defy

use GSM data only when you want and i am sure it will give you atleast 2 days..
If u dont get calls at all(5-6 calls a day), then you may get more than 3 days easily.
And dont forget to calibrate the battery after flashing a new ROM.

crakeron said:
I'm pretty sure there's two possibilities:
1) they're exagerating
2) they barely use it
Peanuts ^^
Sent from my 1Ghz CM7 Defy
Click to expand...
Click to collapse
the last time i checked, my phone only used about 0.5-0.6% of battery power per hr when in deep sleep (wifi, bluetooth and data all off). that equates to about 7 days from full charge!
technically that's how long my battery can last if i don't use the phone at all. so 2-3 days if used lightly is definately not exagerating

7days???
my defy can last 1day only!

Switch off data, wifi, gps.
Reduce screen brightness. (Display backlight consumes most of the battery)
Undervolt the cpu.
Use the phone as little as possible.
I'm pretty sure you can hit 2 days with this.
The maximum i've been able to get is 2 days. I got this only with minimal usage that i could manage. So it depends on how much u use the phone.

Buy a Nokia from the late 90's if that's all you do with your phones xD
The day the word "smart" was added next to phone, it changed everything
Sent from my 1Ghz CM7 + CM9 Defy

not posible, if you have disabled wifi and 3G, the most that is two days would
sorry for mi english

well my status of battery as below
about 2 hours of wifi
playing with phone for tweaks and looks installing apps for more than 5 hours
Around 10 calss more than 50 msging
I m left with 34% after 2 days
I switch flight mode on by 12 and switch it on by 7
Undervalted cpu default values
Juice defender

I think the setvel will make your battery longer

My battery barely lasts a full day with normal use :|
Sent from my MB525 using XDA App

I last 1,5 days with wifi off, 2G and green power...

my defy with latest quarx stable lasts 4-5 days and i never turn it off. Gps, wifi, gsm modem always off and 2G only: i manually activate them when in need.
It goes to deep sleep at night using max 3% of battery. During the day i switch on wifi or gsm module to check emails, gmail, the market and so on for a total of 1-2 hours. Lots of sms and some calls.
Check your sim card and if it's an old one change it with a 128k new one as it drains far less battery (it double your battery life)
Also a good battery calibration is very important (if not done well the phone never goes in deep sleep when it should) and doing 2 or 3 complete carghe/discharge cycles after the first calibration are very helpful.
Give it a try
Bye!

You can use over 2 days with minimum use. When I sleeping, My defy requires only 1% of battery an hour!
Sent from my MB525 using XDA App

There's a lot of people that barely use his phone.
in a day i have the wifi on 6hs. send a receive a lot of sms. maybe a litle call. play a litle of angry birds and at the end of the day i have 30-40% of batery

anyone tried MIUI vs CM7 battery use ?
well on CM7 when i put screen off it goes to deep sleep
where as on MIUI when screen is off it still shows that it uses cpu @ 300mhz
i dont know whats wrong i feel that it uses battery more..
anyone any idea ?

My 'spare defy' (without SIM, only WIFI) reaches multiple times of uptime.
So turning the radio off or (at least) switching data connections off increases battery live a lot!

asn39 said:
well on CM7 when i put screen off it goes to deep sleep
where as on MIUI when screen is off it still shows that it uses cpu @ 300mhz
i dont know whats wrong i feel that it uses battery more..
anyone any idea ?
Click to expand...
Click to collapse
you must have left something on that prevents it from going into deep sleep. i always have the following off:
1. data
2. wifi
3. bluetooth
4. gps
5. background data
i only turn them on on-demand, ie, when i want to use them. i don't use "pushed" email or auto sync features.
if you don't see deep sleep in cpuspy on a high percentage, you won't get good battery life.
edit: some apps that run in background might prevents it from going into deep sleep as well. check to see if that's the case for you when using miui.

well so i moved to cm7 and boom...
jh20 said:
you must have left something on that prevents it from going into deep sleep. i always have the following off:
1. data
2. wifi
3. bluetooth
4. gps
5. background data
i only turn them on on-demand, ie, when i want to use them. i don't use "pushed" email or auto sync features.
if you don't see deep sleep in cpuspy on a high percentage, you won't get good battery life.
edit: some apps that run in background might prevents it from going into deep sleep as well. check to see if that's the case for you when using miui.
Click to expand...
Click to collapse
Theres no deep sleep...max it uses 300mhz...i use setvsel to use default...shud i flsh SBF and try Cm7 again ??

Extreme battery drain?

My phone:
- stock rom .62
- latest doomkernel (v10)
-.36 baseband
I removed all bloat, have 310mb internal memory free (ran supercharger)
I configured setcpu 806max, 134min, smartass governor and screen off profile 365max 134min
When the screen is off, i don't have the drain. It was at 74% when i went to sleep, when i got up about 9 hours later it was STILL at 74%, so there's practically no drain when the screen is off which is really nice.
But when the screen is on, the drain is immense. I have about 1% drain every 3min when the screen is on. It's on max brightness. I just left the screen on continuously for about 3 hours, and it has gone from 70% to 14% in just those 3 hours leaving the screen on (just leaving the screen on, doing nothing else on the phone).
Is this normal? If not, can somebody tell me how i can find out what is causing this drain? I'm happy about the drain (which is zero to none) when the screen is off though...

you are doing everything ,however if you are using high powered apps like Muffin Knight/Experiment /etc they will drain battery fast under 3 hours

I'm not running any apps besides the standard+setcpu

Display needs to be lowered. Make it Auto.

Turn Wifi off. If you don't need it, it's just awful to have it on because it's always searching & searching and wasting battery.
Also, use this app that I'll link below. It has something called a "Smart Power-saving" function where all 2/3/4G and WiFi will shut off when your battery is 20% or lower, thus leaving only Phone and SMS activated, and there's an option for root users where the cpu will underclock when the screen is locked! It DEFINITELY helps!
The market page is all in Chinese, but the app is in English.
https://market.android.com/details?...DIxMiwiY29tLmRpYW54aW5vcy5wb3dlcm1hbmFnZXIiXQ..

[Q] HTC DHD 4.2.2R8 drain battery so much

Hi everyone!
I'm using JellyTime 4.2.2R8 on my DHD.
It's working fast but battery drain so much.
Ex: I only view screen, scroll something. Everage 1 minute, battery degree 1-2%
Who can help optimize this problem?, thanks!

banghn said:
Hi everyone!
I'm using JellyTime 4.2.2R8 on my DHD.
It's working fast but battery drain so much.
Ex: I only view screen, scroll something. Everage 1 minute, battery degree 1-2%
Who can help optimize this problem?, thanks!
Click to expand...
Click to collapse
Hi,
I installed JellyTime R8 on Monday evening, and I haven't experienced such a battery drain so far, it goes down a bit faster than my stock Gingerbread+Sense ROM. I might have other stats issues (wrong "on battery" duration, charge stuck at 90%...), but no drain so far.
I am not well experienced in flashing ROMs and how to solve problems, but I have seen lots of people advising to flash the battery stats and recalibrate. But you need a few complete charge/discharge cycles to make it work properly. (But according to a few other people, it's a kind of religious belief too...)
You can also install a more precise battery stats app. I saw a more detailed message in Jellytime Dev thread (in one of the last pages). If I find it again, I let you know.

BetterBatteryStats
banghn said:
Hi everyone!
I'm using JellyTime 4.2.2R8 on my DHD.
It's working fast but battery drain so much.
Ex: I only view screen, scroll something. Everage 1 minute, battery degree 1-2%
Who can help optimize this problem?, thanks!
Click to expand...
Click to collapse
I cannot find again the thread/post where I saw this information, but the application some people advise to use is BetterBatteryStats.
To give you a counter example: since I flashed JellyTime R8 (Monday 20th Mai, 23h GMT+1), I fully charged my phone only twice.
The first discharge took almost a day (but I used it a lot, configuring and playing with the new features).
The second discharge started 33 hours ago and I still have 50% as we speak. Maybe the stats are wrong, but the phone is still ON after 33hours. I'll let you know how long it lasts.
I am on GSM roaming all day long, but my phone stays most of the time in standby mode.
A few things that I've done to optimize the battery life:
- remove the constant location-tracking, both GPS and 3G (especially as GPS is not working since I flashed JT R8);
- remove permanent/auto 3G connection, as I am spending all the day abroad, it is useless to keep 3G activated, without data roaming on.
Go in Settings/location and switch the toggle off.
Go in Settings, expand Wireless and Networks (Plus), then Mobile Networks and untick the first box (my ROM is in french so I am not 100% sure of the translation, it might be something like Activate Data)

Matth59 said:
....
Click to expand...
Click to collapse
Thanks Matth59 !
I toggled off some setting in phone (GPS, MobileData, effect screen, animation, turn off notification some app...)
But but it does not improve the problem of battery.
I charged full battery, after 24minutes
Saw status of battery on 24m19s, (95%)
Screen 70% (I set bright of screen about 20-30%)
Cell standby 6%
Android system 5%
Phone idle 5%
Wifi 3%
Facebook 3%
Android OS 2%
Media server 2%

banghn said:
Thanks Matth59 !
I toggled off some setting in phone (GPS, MobileData, effect screen, animation, turn off notification some app...)
But but it does not improve the problem of battery.
I charged full battery, after 24minutes
Saw status of battery on 24m19s, (95%)
Screen 70% (I set bright of screen about 20-30%)
Cell standby 6%
Android system 5%
Phone idle 5%
Wifi 3%
Facebook 3%
Android OS 2%
Media server 2%
Click to expand...
Click to collapse
And how long does it usually take for it to be discharged?
The second time I charged it, it said that charge was complete and stopped charging at 90%, and I got the impression that it reached that level quite fast. But the device is still on, after 38 hours.
I hope somebody with more experience in that field can give you a better advice or more information, than just flashing the battery stats and recalibrate it.

After one week of using R8, this is how battery is going for me.
On standby, it can last as long as it used to with the stock Sense + Gingerbread ROM (or even a bit more, but maybe because I haven't reinstalled all my apps).
When using the phone, battery life is going down quite fast, and I am not sure if it can last more than 1 day of normal use (3g, mails, messages, calls...).
The most battery consuming task is the screen. It makes me wonder if it could be related to the feature that was introduced by Google since JellyBean 4.1: Project Butter, which makes everything smooth in Android.