Wifi constantly scanning? - Samsung Epic 4G Touch

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:
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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

Related

[Q] Sleep of Death with Stock

So I read about other people having this problem with custom ROMs or rooted phones but I am on unrooted stock after OTA. I thought was one of the 60 or whatever apps I bought during the 10 cent promotion but I uninstalled them all and I still had the problem. It's not frequent but it's happened 3 times in the last couple of weeks. It's mildly annoying to have to pull the battery but the part that I can't live with is that whenever it this happens, my battery drains like crazy. The battery usage drops off a cliff and I caught this one after no more than 5 minutes. Any thoughts on this? I don't have an SD card so it's not that. Thanks!
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to find the rogue app use betterbatterystats and cpu spy. not sure if they superuser. also badass battery works too.
Mine did this the other night on Calk's ROM. Something got stuck keeping the phone awake causing that cliff like drop off.
Happened to me on stock once, installed some game but didn't play it so I don't think that was the reason. It was either the default browser or the contact list.
Thanks for the replies. I figured it was an app but wanted to be sure before I started deleting things. I was just worried that this might be something to do with hardware or something.
I have same problem with different roms and i don't know what to do...
Sent from my GT-I9100 using Tapatalk 2
I had the same problem I figured out it was my wifi being turned on all the time. I have always heard leaving your wifi on when it's availible was supposed to save battery but I checked in better battery stats and saw there was almost 7000 wakelocks in a 5 hour period. I turned wifi off problem solved I only turn it on when I need to.
It is happend even wifi is off.
Sent from my GT-I9100
cristianu said:
It is happend even wifi is off.
Sent from my GT-I9100
Click to expand...
Click to collapse
Your battery might be going bad... take it out and spin it on a flat surface if it spins freely the battery is most likely done.
My battery have 3 months old. My s2 is new....
Sent from my GT-I9100
cristianu said:
My battery have 3 months old. My s2 is new....
Sent from my GT-I9100
Click to expand...
Click to collapse
Same thing is happening to my friend's white E4GT, I think there might be a defective/bad batch.
Sent from my SPH-D710 using Xparent Red Tapatalk 2

T-Mobile - horrible reception? (Time without a signal)

I've got the T-Mobile SGS3, and am getting horrible reception.. time without a signal hovers around 30% at home on this phone, where as both my Nexus One and Sensation had no problems whatsoever with signal. Going for WCDMA preferred instead of GSM auto (default out of the box setting) didn't help.. fwiw, I'm getting 3-4 bars of signal on the statusbar.
is anyone else having this issue, or is my phone just a lemon?
Thanks!
bump.. no one else is seeing bad reception?
Sent from my SGH-T999 using xda app-developers app
I think a lot of people are having this problem in one way or another, including myself.
http://www.tmonews.com/2012/07/t-mobile-suffering-data-outage-says-early-reports/
Sent from my GT-I9300 using xda premium
Yes im having trouble!! No internet On htc amaze! Good to know not only me. weird that texting works but not internet. Oh well guess time to stay on wifi for nowm let me know if anyone gets any updates or when its getting back up.
Sent from my HTC_Amaze_4G using xda app-developers app
Like my signal is so bad right now.
I'm having problems in Las Vegas area thank god I'm home now, I just switch carriers for better service and this happens 0_o for 3 years in different carries I never had problems
Sent from my SGH-T999 using Tapatalk 2
I got 4g back by the toggle data like 10 times lol, saw it in another thread
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Sent from my SGH-T999 using Tapatalk 2
Ha either way my 4g is back. Good thing for wifi for a couple hours
Sent from my HTC_Amaze_4G using xda app-developers app
cashyftw said:
Like my signal is so bad right now.
Click to expand...
Click to collapse
Im on sprint, and my signal is piss poor also. Take forever to logon to pandora and forget about watching any videos, impossible. I'm thinking the modern needs an update. What's the sense in having this bad ass phone if we can't even listen to internet radio in peace. I'm going back to my SSG2, and getting my HBO back for lunch
I'm still getting 25-30% time without a signal, just sitting at home.. why is the signal strength for the SGS3 so bad?! Is it a Samsung issue? I've only had HTC android phones before this one.

How is the battery life on TouchWiz Jellybean?

I've been using CM10, and very few times has the battery life been that good. I'm not talking about when I'm not using it, I've reduced that a bit, I'm talking about when using the device. Overnight, it only drains like 10% (still more than I'd like but I'm taking measures to make it less), but when I'm actually using the device, it drains really rapidly. Like, I'll lose 10% in 20 minutes just using Facebook, Instagram, Pulse, etc. I've had it on airplane mode overnight one time and it didn't lose a percent, so I don't think I have a bad battery. So I'm thinking it might be the OS, but I don't know, how is everyone else's battery on TouchWiz, and have you used CM10 before and had bad battery?
Heres my stats for today
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I've got 2 hr 30 min of screen time at auto brightness
10 min talk time
Around an hourish of listening to music
I keep autosync, bluetooth, and gps off. Nfc and s beam on, im using ktoons kernel and running ktoonservative governor at 1.5 ghz.
This is what I've been usually getting day to day, i cant say how much facebook uses as i dont keep track, and i dont use instagram.
Ive been on task's aokp 4.1.1 and my battery life was about the same, maybe a little better. Overall, ever since i turned off gps and autosync ive been satisfied with my battery (as i dont need either on a daily basis) Hope this helps
Sent from my SAMSUNG-SGH-I747 using xda premium
Hmmm well like I said, while I could eliminate more background data, I think I'm fine with the data side of things. I also freeze my Google Maps app so it doesn't keep on turning on, but I do keep my GPS on. It just seems like a huge drain when I'm using apps, like I mean some CM10 nightlies seem to drain slower than others, but if you say your battery was about the same between OS's, then I guess it's just me imagining it. I always thought the GSIII would last longer though, on paper it lasts longer than an iPhone, but it sure as hell doesn't do it in real life lol. It's what I switched from and one of the reasons why I picked the GSIII over the iPhone 5, but ugh messing around with the battery is such a pain.
Haha yeah its a pain, but when you get it the way you want it's amazing. Also keep in mind that your signal strength, LTE connections, and how much you use wifi over data will also play a factor
Sent from my SAMSUNG-SGH-I747 using xda premium

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.
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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.

[Q] Terrible Battery Life with the Note 4.

I have the black AT&T Note 4 32GB and I consistently have about 2 and 15 hours of screen on time. I have a apps that monitor apps and no app seems be taking abnormal amounts of usage. Also the apps say my battery health is good and this phone is only about 5 months old. Even with turning screen brightness to min and turning off any signal using services I can't get pass 2 Hours and 30 minutes. The phone's running Android 5.1 although the problem persisted with Android 4.4 too. Please help me as I want to make sure I know what the problem is before returning the phone or buying a new battery.
Try charging the phone, power off and on, then remove from charger after the phone boots into android. This helps a bit with my battery life. Try disabling advanced LTE options in mobile networks as well. This is a bit subjective, but does the phone get hot?
sam2c said:
Try charging the phone, power off and on, then remove from charger after the phone boots into android. This helps a bit with my battery life. Try disabling advanced LTE options in mobile networks as well. This is a bit subjective, but does the phone get hot?
Click to expand...
Click to collapse
The method didn't make any noticeable difference. I never have advanced mode on as well. My phone only gets hot (not warm) when I'm charging my phone but during heavy game-play or intense YouTube resolution video it's barely even warm. Sorry if I'm not giving you enough info. Just came from an iPhone and to be honest. It's battery life is disappointing.
Use @gatesjunior Debloater tool
http://forum.xda-developers.com/showthread.php?p=58068827
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What apps do you disable? Could you share your list with us? Thanks.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
Sitting at the pool and saw your post. I consistently for 7-8 hours of screen time. Here's a post where I screen shot all of my disabled apps.
http://forum.xda-developers.com/showthread.php?p=60467941
Hope it helps.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
jack man said:
Sitting at the pool and saw your post. I consistently for 7-8 hours of screen time. Here's a post where I screen shot all of my disabled apps.
http://forum.xda-developers.com/showthread.php?p=60467941
Hope it helps.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
Click to expand...
Click to collapse
Thanks! I am going to try your list. Hope it will help me as well.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
try to calibrate the battery

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