Develop Bugs

Wifi constantly scanning?

It seems like the wifi is constantly scanning even when connected to a network. Wouldn't this be big drain on the battery and is there any way to stop it?
Sent from my SPH-D710 using xda premium

clamknuckle said:
It seems like the wifi is constantly scanning even when connected to a network. Wouldn't this be big drain on the battery and is there any way to stop it?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
It must be that it is only constantly scanning when on that settings page, because it isn't a big drain on battery.

I notice it is also scanning for wifi even though im completly connected, but im still getting great battery use out of it.
Sent from my SPH-D710 using xda premium

I posted this same issue to the Sprint forum and a tech responded that he will add it to the bug list for the next MR as he could see it too. Not sure if is scanning when not on the settings page, but at any rate, it seems like it should stop scanning if it has a hold of a network.

How do you check for this? May be relevant in my case...
Note, i posted this in the battery life thread - suspecting a wifi issue of some sort:
geolemon said:
Yesterday was a bad one for me:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I had to plug it in around 8:30 as you can see.
My wifi was on all day and connected, since I didn't leave the house.
I've changed the wifi sleep setting today, so we'll see if that makes a change.
The only other thing I changed yesterday was from the stock wind weather live wallpaper to a koi Pond live wallpaper, good reviews and no mention of battery issues that I saw).
I'm suspecting the wifi but interested to hear any "eureka" discoveries.
Other days, i'm at work fairly long hours and had wifi off most of the day at least, and thought my battery life has been good... Still 50% or 60% left at 8 or 9 pm.
Click to expand...
Click to collapse
Edit:
Note how the precipitous battery drop corresponds to when wifi was turned on in the morning.
I can't believe this would be simply coincidental.

I have that issue to, but great battery life. My biggest concern is horrible 3g speeds. My wifes evo does not have this issue.
Swyped from my Samsung Galaxy SII EPIC 4g Touch on XDA Premium!

I noticed the same problem. I swear it also increases my Android OS usage. I get about 12 hours of battery life with 2 days of sample size.
Sent from my SPH-D710 using XDA App

Battery life

This phone is only lasting me about 8 hours before my battery will die. What can I do to help out my battery?
Sent from my SPH-D710 using XDA App

download an app call battery calibration, then after a full night of charging, go to that app and calibrate with the charger plug still in, after its done reboot phone and take it off the charger. drain the battery until it shuts off by itself. charge it back up while its off. then continue to use as normal. wait a couple days to see if the battery gets any better. my phone doesnt last too long either, im thinking of replacing the battery to see if thats the problem

Try removing some apps, that worked for me there was some apps that were sucking up my battery.
Sent from my SPH-D710 using xda premium

slap on a extended battery!

Kiss it three times, say two Hail Mary's and toss it over your left shoulder.
No seriously, battery life is very dependent on many things, and your statement doesn't come close to providing enough information for anyone to give you any real help. At minimum you need to provide the following during your 8 hours ...
- Total Display on time
- Brightness setting
- What you have auto syncing and how often
- Average signal strength
- Usage pattern (web browsing, calls, streaming video, etc.)
- Widgets on your home screens
- Screenshots of your battery usage and graph

My phone will also last around 8 hours if im constantly using it.

Thanks everyone for the responses. I will try out all the advice.
Sent from my SPH-D710 using XDA App

wxcolon said:
Thanks everyone for the responses. I will try out all the advice.
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
With moderate use, I get about 20 hours. With heavy use I get about 10-12. It's still enough to get me through the day
Love this phone!

{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
This is my battery after heavy use. I love the battery. Calibrated.
Sent from my SPH-D710 using XDA App

Battery Drains when not in use/sleep

Am I in need a new battery? Which ever ROM I use this happens.

Need a little bit more information then that in order to help
Sent from my R800x using XDA

Left the phone idle after I pulled the charger. Came back and it's already below 90% (87) I haven't used any apps,as you see only the usual stuff show up.
droidjunkie said:
Need a little bit more information then that in order to help
Sent from my R800x using XDA
Click to expand...
Click to collapse
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Researched a bit and heard cell standby could be the issue,are mine normal? Can't tell.

How long was it off the charger for? Also I would be more worried about wifi, if your actually using wifi then yeah leave it turned on but if you're letting the phone just sit there I would try turning it off but I don't user wifi so I'm not sure. You can also try turning the brightness settings down.other then that it looks normal to me.
Sent from my R800x using XDA

Brightness is always below 50%,I keep around 25%.
So 2 hours off the charger,wifi on and idle,87% is normal? Everytime I turn it on just to check the battery it drops 2%, I don't think that's normal.

Honestly that's probably normal if you were away for an hour or so or if you left wifi on. Battery life also depends on which kernel you're using as well.

Solar.Plexus said:
Honestly that's probably normal if you were away for an hour or so or if you left wifi on. Battery life also depends on which kernel you're using as well.
Click to expand...
Click to collapse
I'm using DooMKernel v14

Installed Juice Defender, did some tests and just after I unplug, it took a while to go down to 99% took 10 minutes while watching YouTube on 3G but as it got down to 95 % the battery just drains quickly , went to 85% in 5 minutes while browsing the web
Sent from my R800i using Tapatalk 2

i noticed the same thing
i lost my old charger so i bought a new one and thats when i first started having this issue.
phone would seem to charge faster than before but died faster as well when using this charger. (this was my work charger). at home i use laptop to charge and takes longer but lasts longer.
also noticed phone got warmer when charging at work. so i returned that charger and got a different one and problem solved.
so if your using a different charger recently a new one may help

WiFi seems the culprit. Maybe Google how to set the wifi scanning interval
Sent from my Xperia Play using Tapatalk 2

I'll try a different charger. The phone does get hot when plugged in.

Better Battery stats.
I'll bet one of your apps (a wifi app) isnt sleeping, and thats why you are losing the battery.

Did I get a defective battery?

Just got my s3 like a week or so. I made a mistake and not charge it initially (thought it was a myth). I used my battery all the way to 17%. Now my battery only average up to 2 hours screen on. My sister who also got the phone as the same time has about right hour screen on time. Did I screw up or it's just my battery being defective
EDIT: attached is the battery stats
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my SGH-T999 using xda app-developers app

What's brightness set to, and what are you doing while the screen is on? You on WiFi most of the time?

mt3g said:
What's brightness set to, and what are you doing while the screen is on? You on WiFi most of the time?
Click to expand...
Click to collapse
Well, when I'm in door, I use low brightness most of the time. Only when I'm outside I would use auto brightness. Since I'm in wifi zone most of the time, yes I do have wifi on. I mostly use my phone for twitter, web browsing, and youtube, nothing heavy like gaming or benchmark.

Hard to say if its defective but I've definitely seen a lot better battery. It might not hurt to try and get a new one.
Sent from my SGH-T999 using xda premium

you should calibrate your battery a couple times once you get the phone. do it a couple times and it will fix itself. also check all your syncing settings. this phone will deplete a battery in 5-6 hours if fully charged and phone brightness is up all the way while watching videos.

Calibrating batteries is a myth from the days of older battery technology. Draining your battery to 0 on purpose is actually killing your battery faster because you just used up one cycle.

gr4p3s said:
Calibrating batteries is a myth from the days of older battery technology. Draining your battery to 0 on purpose is actually killing your battery faster because you just used up one cycle.
Click to expand...
Click to collapse
I think you're right
Sent from my SGH-T999 using xda premium

There's a bug on stock that makes cell standby much higher than it really is. So I wouldn't worry too much about that.
Also, Google Chrome is a huge battery killer for some reason. Consider switching to a different browser?

Still having the original battery in my vibrant and getting 8-9 hour charges while killing the battery 100% and charging it up once a week does nothing? Same thing for my g2x. I get about 10-11 hours on the thing daily original battery as well. If anything and you're not rooted to delete battery stats, its a good thing to do a couple times. I don't think I have hurt the battery at all, and if anything they still last very long...
Sent from my SGH-T999 using xda app-developers app

Major Battery Drain Help!! (100% -> 0% in < 5 hrs)

Firstly, I am fully stock in every way. I have been getting abysmal battery life from my phone.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Obviously I'm aware that the culprit is lookout.. i do like the services offered by lookout and would like to keep them. Disabling lookout does fix the problem but I'm wanting to hear potential causes and/or fixes..
Thanks for your time.

Which of the features does it offer you "like". Many times there are other alternatives for those "features" without the drain.

Im using lookout with no major battery drain. Looks like your wifi was on all the time. Low wifi signal may cause for wifi radio to broadcast with higher power. Smart stay will trigger camera every few seconds. Personally I use "Screebl" from play store - it keeps screen on by checking if phone is not laying flat. Install "better battery status" (need root for that) and it will allow you to see which app or service keep phone awake. Turn on power saving mode. In settings turn off wifi while sleep mode.
Sent from my SGH-T889 using xda app-developers app

Try one power guard https://play.google.com/store/apps/details?id=com.onexuan.battery. and or Snapdragon battery guru. https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app...... also I deleted lookout since i also had crazy batter drain I went from 100% to 88% in 45 minutes.
Sent from my SM-N900T using Tapatalk

Thanks to those who replied. . However none of the answers have helped. .
Like I said, I am hoping to keep lookout as an unrooted stock user .. for now.
What isn't adding up is the fact that most users are reporting no issues with lookout draining battery..
So why am I having problems ??
As for weak wifi, that's not an issue.
Other ideas ??

I had the exact same issue. The only way for me to stop that was to uninstall it unfortunately
Sent from my SM-N900T using Tapatalk

Don't use lookout.
sent from my sm-900t.

Tried factory reset?

Be done with lookout
NOTE 3

Lookout Isn't doing that for me maybe a update is needed?
Sent Via Tmobile note 3

I keep finding Play Music running on its own and eating battery quite often. Maybe that's the culprit? Was happening lately on my Note 2 as well.

I had this issue just after using Root de la Vega. My battery was going completely dead after about 4 hours with light use and the phone was getting really warm like the CPU was pegged the whole time. I did a factory reset and have all the same apps installed and my phone now makes it easily through a 10 hour workday and 45 minute commute with heavy use (5h screen time). Try that if you haven't.