Develop Bugs

Battery life

Not really sure what is going on with my battery life. after 5 hours I am down to 50%. Is this normal? I am using the new beginning ROM by Tuesday.
Sent from my SGH-T989 using XDA App

joneslaw22 said:
Not really sure what is going on with my battery life. after 5 hours I am down to 50%. Is this normal? I am using the new beginning ROM by Tuesday.
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
5 hour display time!? sick battery life

Lol um yea I usually last about 13 hours total outer charge with moderate/heavy use and using juice defender to disable data while screens not in use..
Sent from my SGH-T989 using XDA App

No about 2 hour display time.
Sent from my SGH-T989 using XDA App

I thought juice defender drained the battery?
Sent from my SGH-T989 using XDA App

Well you thought wrong lol it gives an extra couple hours with use and it'll last about 4 days if I barely use out
Sent from my SGH-T989 using XDA App

so you get 2 hours display time at 50%...
so you get about 4 hours display time total?
Well all i can say is...
WELCOME~! you have average battery life for the t989! other devices barely break 3 hours! congrats!

2 hours of display time (also depending on how bright you have had it) with 50% left is pretty good.

I'd have to disagree that 2 hours is good, I'd call it subprime. Do some searching on XDA. There are plenty of wonderful tutorials and guides to small things you can do to help it out quite a bit.

i need help reading battery graph

So i would like to learn how to read my battery graph also this is the rom im running atm...
Also my question is how do i fix this?
Sent from my SPH-D710 using xda premium

fix what?

It looks like your battery took a steep dive. The graph shows at what rate your battery discharges. Since youre on ics, battery life isnt going to be phenomenal. What are you trying to fix?
Sent from my SPH-D710 using xda premium

j_shelton1988 said:
It looks like your battery took a steep dive. The graph shows at what rate your battery discharges. Since youre on ics, battery life isnt going to be phenomenal. What are you trying to fix?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Actually it was having freaking awesome battery life til like two days ago so i just wanted to know why it took that steep dive, and how do i prevent it is wat i ment by "fix it" thanks
Sent from my SPH-D710 using xda premium

Why is this happening to me? Screen issue epic 4g

What can cause my screen to use 80+% of my battery I'm running aokp milestone 6 w/ nyan kernel on my epic 4g
Can anyone please help
Sent from my SPH-D700 using xda app-developers app

In 32 minutes, your screen has been on 30 minutes of that time, hence the high percentage... Nothing looks odd about that. If you think it is killing your battery, you should probably look elsewhere like not going to deep sleep, or constant syncing. Need to see better battery stats or cpu spy... If that is the concern.
E4GT, Calkulin's_E4GT_ROM_v3.0 w/Hawkins gunslinger

Well, from your pics, it seems that your screen was on for 30 of the 32 minutes that your phone was on battery. Takes a lot of power to light up a display. Most folks can get by with a days worth of battery with 3-5 hours of screen on time. Some do better, some do worse.
Sent from my SPH-D700 using xda premium

After 100% full charge 2h 19m 23s
Screen 13m 1s
Screen battery stat 47%
Sent from my DROIDX using xda app-developers app

dxthaxjuggla said:
After 100% full charge 2h 19m 23s
Screen 13m 1s
Screen battery stat 47%
Sent from my DROIDX using xda app-developers app
Click to expand...
Click to collapse
I just don't think you realise how much of a battery eater our screens are... that is perfectly normal and the way it should be....
Sent from my SPH-D700 using Xparent ICS Blue Tapatalk 2

It just seems strange to me but if you guys say its normal then it probably is
Sent from my SPH-D700 using xda app-developers app

This is 11 minutes of screen on with crappie reception.

Using battery for the first time

Is it better to gully recharge it before I turn on my phone for the first time or should I drain it down to about 1 % and then recharge it? Or does it not matter? Thanks!
Sent from my GT-N7000 using xda premium

DMax99 said:
Is it better to gully recharge it before I turn on my phone for the first time or should I drain it down to about 1 % and then recharge it? Or does it not matter? Thanks!
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Doesnt matter at all!
Sent from my GT-N7100 using Tapatalk 2

barondebxl said:
Doesnt matter at all!
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
How come? Does it calibrate itself?
The manual says to charge it fully before first time use or long time of no use?
Sent from my GT-N7000 using xda premium

DMax99 said:
How come? Does it calibrate itself?
The manual says to charge it fully before first time use or long time of no use?
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Yes it calibrates itself. these new lithium-ion battery are "smart" battery and they have this little trigger that tells them when the battery is fully charge so they dont get over charged or anything. All you need to do is put the battery and start using the phone.
Sent from my GT-N7100 using Tapatalk 2

barondebxl said:
Yes it calibrates itself. these new lithium-ion battery are "smart" battery and they have this little trigger that tells them when the battery is fully charge so they dont get over charged or anything. All you need to do is put the battery and start using the phone.
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Im sure li-ion batteries are not to be fully drained. To have long battery life, i think you are to charge as often as possible and never let it fully drain - although the phone seems to check voltage and forcefully shuts down when the battery is really low.

Yeah it really doesn't matter.. And it's really never good to let your battery drop to 1%..I try to never let my lithium ion battery go below 10 if I'm near a charger
-TeaM VeNuM Like A Boss

sonhy said:
Im sure li-ion batteries are not to be fully drained. To have long battery life, i think you are to charge as often as possible and never let it fully drain - although the phone seems to check voltage and forcefully shuts down when the battery is really low.
Click to expand...
Click to collapse
Yes a fully drained battery isnt as good as charging like around 5% or so but theres no calibration needed, just put the battery and do your thing.
Sent from my GT-N7100 using Tapatalk 2

4.2 Daydream and it's effect on battery

Daydream sounds awesome. I have it displaying the clock while it's charging. My questions is, how much drainage is it doing to the battery while the screen is on?
For instance, if i had the screen completely off, I would have reached 100% in 1 hour rather than 1.5 hours since I have day dream working...?
So how much drainage?

lemonspeakers said:
Daydream sounds awesome. I have it displaying the clock while it's charging. My questions is, how much drainage is it doing to the battery while the screen is on?
For instance, if i had the screen completely off, I would have reached 100% in 1 hour rather than 1.5 hours since I have day dream working...?
So how much drainage?
Click to expand...
Click to collapse
For me it charges at the same rate with daydream on(of the wall)
Sent from my Galaxy Nexus using Tapatalk 2

What concerns me more than charging rate is screen degradation, AMOLED screens degrade over time so I wouldn't keep my screen on if I wasn't using it

Ma7moud90 said:
What concerns me more than charging rate is screen degradation, AMOLED screens degrade over time so I wouldn't keep my screen on if I wasn't using it
Click to expand...
Click to collapse
Exactly, you risk burn in by using this feature too much i think
Sent from my Galaxy Nexus using Tapatalk 2

This might be why Google switched the display type from AMOLED to the LCD in the nexus 4.
Sent from my Galaxy Nexus using xda premium

msavic6 said:
This might be why Google switched the display type from AMOLED to the LCD in the nexus 4.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I think it was LG's choice and I think LCD is cheaper.
Sent from my Galaxy Nexus using Tapatalk 2

Are any of the daydreams even static? I assumed that the reason the clock bounces around is to avoid things like burn-in.

The standard one is static, some of the third party ones are not. I really wouldn't worry it too much.
Sent from my Nexus 7 using xda premium

I'm using the Beautiful Widget daydream and it is awesome. One of my favorite features on 4.2
Sent from my Galaxy Nexus

my gnex fully charged 2hour 30min. your gnex charge to fast wow! which charger r u using?
Sent from my Galaxy Nexus using Tapatalk 2

arrish4 said:
my gnex fully charged 2hour 30min. your gnex charge to fast wow! which charger r u using?
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
my gnex also takes around 1-1.5 hours to full charge from 0%.. i use the charger that came with it

T-Keith said:
The standard one is static, some of the third party ones are not. I really wouldn't worry it too much.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Check again, the standard daydream clock is not static, at least the digital one isn't.

i lost my original charger!
Sent from my Galaxy Nexus using Tapatalk 2

it isn't just about burn in... amoled pixels do degrade over time like another user said,and this is a dangerous way to screw up your screen much quicker.
not a good feature to use on our phone imo

It takes a long time for that to happen there are plenty of people still rocking a Galaxy S1 and the screen is fine but I'm not saying there's no one with problems but I doubt it would mess up by using daydream
Sent from my Galaxy Nexus using xda app-developers app

Ya, the digital clock is not static. However, I would worry more about the navigation bar because that thing is gonna stay in landscape mode and I already got a nav bar burn-in in portrait.

arrish4 said:
my gnex fully charged 2hour 30min. your gnex charge to fast wow! which charger r u using?
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Mine too... took about 1:30h ~ 2h to fully charge... i use the original charger of GNex

Jasonhunterx said:
It takes a long time for that to happen there are plenty of people still rocking a Galaxy S1 and the screen is fine but I'm not saying there's no one with problems but I doubt it would mess up by using daydream
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
depends, is it on overnight? Say you sleep 8 hours that's 8 hours extra the pixels are on per day.
Do the math, it would add up quickly

burn in only occurs when you have an static image in the same place all the time.. daydream move the clock around the screen every few seconds, and with the black background most of the pixels of the screen are off anyway.
so no, there is no danger using daydream.

rodmc123 said:
burn in only occurs when you have an static image in the same place all the time.. daydream move the clock around the screen every few seconds, and with the black background most of the pixels of the screen are off anyway.
so no, there is no danger using daydream.
Click to expand...
Click to collapse
I'm not talking about burn in....
do you not know about the degradation of amoled pixels over time?
you could end up with dead/stuck pixels a lot earlier than expected.