Hey people.
After leaving my phone unplugged, on standby, for 8 hours, I have noticed that wpa_supplicant has used 15% of the battery.
I can't find any useful info as to what wpa_supplicant is and how to stop it using my battery.
Can anybody help?
Thanks.
WPA is the encryption method used on WiFi, so my guess is that you had WiFi connected and thats simply the usage it took to encrypt your WiFi data.
Related
Hi,
I'm wondering some things to optimize my battery life, but couldn't find any answers so far:
1) When Wifi and APN both are ON, Wifi will get priority. But the APN-setting is actually still on. Will it drain the battery, or should I always turn APN off when Wifi has been connected?
2) I have set Ultimate Juice (or Juice Defender) to turn on APN every 10 minutes during 1 minute to check for updates. But when I turn off APN, Juice Defender can't turn APN on himself to check for updates. That means that I have to remain APN ON. Doesn't that drain the battery, or is Juice Defender turning APN off on his own way?
3) I noticed that when the screen is off in standby, Android will turn off Wifi and APN. People are saying you should turn off APN and Wifi when not in use, but since Android turns both off while screen is off/standby mode, what's the use of turning both off manually? I think you could even turn them on all the time since they will get turned off when the screen goes black.
4) e.g. You're in a situation without any internet access. Apps like the Friends Stream, or Mail want to check for updates every 5 minutes. the consequence is they can't update because there's no internet connection. Does that action always drain the battery some more?
wtf no one??
under the wi fi advanced settings.. you can set wifi to never sleep... this should mean that your not using the apn connection...
I think apps try to update and if they do not succeed, it will be cancelled. I doubt the apps will continously check for updates until they get a fix. Same with Weatherbug. I sometimes see Weatherbug last updated hours ago, even when I have had internet access for the past hour (I have set it to update every hour). That was when I had unchecked 'enable always on mobile data'.
There are options available for wifi under advanced menu to set it to always stay on, or shutdown after 15 mins of sleep.
There is also an option available to always have data connection on. This will keep data connection alive even if phone is set to sleep.
Do you mean "mobile data connection" everytime you call it "APN"?
There's WiFi and that; two ways to access the net which pull power. WiFi can be disabled quickly and easily through the widget. So can the mobile data network: http://yfrog.com/0ymobilewidgetp
Leaving it to 2G when you don't need 3G or when 3G reception is bad saves much power. I'll need to do more experimentation before I can answer your other qs with assurance.
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- Sent via my HTC Desire -
Does anyone know where to set the wifi "not to sleep" during stand-by. I try to find the setting but cannot find it.
Currently, it seems like HD7 uses data connection (GPRS) to sync e-mail , calendar, etc. instead of wifi while phone is in stand-by mode. (I turn off data connection and my inboxes are not syncronized during stand-by even I turn on wifi)
It means i still have to pay for the data connection usage even i use wifi at home.
Wi-fi will stay on during standby if you plug your phone into the mains. This is to stop your phone running itself out of battery power, which it would do quite quickly if Wifi stayed running all the time.
So your answer is, plug the phone into the charger when at home.
Thank you very much
Hi all,
I'm wondering what is better option in the Sleep Policy for battery life when you have no access to a WiFi network? Sure, sure, turning off the WiFi will get you better results when you don't have access to WiFi but the location features you get from using WiFi.
At work I have no access to the WiFi network which isn't connected to the net anyways. But it works great for getting precise location information when inside the building.
I tried keeping it on "Never" but wow does that kill my battery.
Does putting it on "Never when plugged in" or "After 15 minutes" keep it from searching for a WiFi signal all the darn time which is what is killing my battery.
From what I have seen since I changed it to "Never when plugged in" half way threw the shift it doesn't seem to draw as much power. But I did check my Google Latitude history and it seems to be pulling my location from WiFi instead of the cell tower. All but a few times did it get the location from WiFi instead of the cell tower. So that has me wondering is it still looking for WiFi or just turning it on when getting a location request.
Any help would be appreciated.
Thanks
I am using a stock HTC Droid Incredible.
I would like to have it where when the screen went off the wifi went off, but that could be a problem if the screen keeps going on and off from texts or whatever else. Would probably use more battery starting wifi over and over again.
I See my wifi has used 30% of my battery but ive been on 3G all day, does it drain the battery searching for networks?
It does use some power when searching for networks. There is probably an APP or settings that you can change to set the Freq of checks maybe. Or you can just turn of the Wifi radio when you know your not going to use it.
DroidHam said:
I See my wifi has used 30% of my battery but ive been on 3G all day, does it drain the battery searching for networks?
Click to expand...
Click to collapse
Yes it uses a lot of power if its regularly searching for networks. Especially if you're moving around and seeing dozens of WiFi spots. Just turn off WiFi when not in use, simple as that.
A lot of custom ROMs have less aggressive Wifi seeking intervals. You can usually set it manually with ease too. Lots of apps out there if you don't want to do it manually.
All that was said is true, but still I find that 30% usage for Wifi just for searching nearby networks is a little too much...
Although I haven't got anything to compare with, I always turn wifi off if I'm not using it during long periods.
Regards
I turn wifi off when it is not needed and battery life goes from one to two days.
Sent from my Galaxy Nexus using XDA App
I've been using Tasker to turn wifi on at home/work and off when I'm elsewhere. It's using cell towers to determine location, so hopefully it won't impact the battery much.
I leave wifi on 24/7, today it has used 2% of the 60% battery i've used.
I travel through london so I assume it is constantly finding new wifi signals.
Sent from Mobile..
Y5 Battery Saver .. on the market, free. Turns on/off Wifi based on known networks and cells in the area of the AP.
str355 said:
I leave wifi on 24/7, today it has used 2% of the 60% battery i've used.
I travel through london so I assume it is constantly finding new wifi signals.
Sent from Mobile..
Click to expand...
Click to collapse
I leave wifi on all the time as well, and I also only have used 2% of the 70-80% battery I used up already.
Try going into wifi settings, then advanced wifi settings, then turn off the new wifi network available notification option.
This increased my battery life slightly.
Sent from my Galaxy Nexus using XDA App
Y5 - Battery Saver helps out tremendously! I barely ever use more than 2% when home all day...although that may be a bug but I started a thread for that already.
eddie_gordo said:
All that was said is true, but still I find that 30% usage for Wifi just for searching nearby networks is a little too much...
Regards
Click to expand...
Click to collapse
That 30% displayed can be deceptive since it's based on the amount of battery discharged and not entire battery capacity.
Well wifi, when on is looking to connect to known networks. If the signal is weak it will disconnect and connect to another network near by if there is that has better signal. This process does use some battery. The biggest drain will occur when you are actively using wifi, that is when you download or upload. So the best way to save battery, is to close wifi when not needed. If however you want wifi you can set it to never sleep. This way even if the screen goes off wifi will be connected and your device wont use the 3G which is way more power hungry.
Hello guys. I suppose I'm not alone in this. My phone losses over 20% every night when connected to wifi network. I tested with wifi off and mobile data (4g) on, and it losses only 4%. Drain is not caused by any apps on my phone, and my wakelocks are ok(tested by GSam Battery Monitor and Wakelok detector). Phone does go into Dose mode overnight. After long period of testing and searching internet I did full wipe data/cache and install stock rom from oneplus site, and install just a few apps from playstore. It was disappointing when wifi drain continued after all I did. Also, when I turn on airplane mode, phone losses 2% overnight, so my conclusion is that wifi causes drain. If you guys have some advice for me, it would be helpful. Thank you!
Same issue here. I have tried everything (clean installs... Formatting data... Multiple roms and firmwares etc)
This is with scanning off and location off. It's Oreo related for sure as the issue dissappears when I flash Nougat
Xcal15 said:
Same issue here. I have tried everything (clean installs... Formatting data... Multiple roms and firmwares etc)
This is with scanning off and location off. It's Oreo related for sure as the issue dissappears when I flash Nougat
Click to expand...
Click to collapse
I hope there will be software update soon to handle this problem.
Hi
I have the Same issue on my Huawei p20 lite with Android 8.0. I think it's definitely the software
I noticed that the Wifi drain only appears if there are many wifi networks around.
At home we have 3 networks around and my phone doesnt lose any battery over night.
At my girlfriends place there are like 25 networks around and my phone loses >20% overnight.
Realy strange.
Maybe it has something to do with wifi scanning in the background?
gamer850 said:
I noticed that the Wifi drain only appears if there are many wifi networks around.
At home we have 3 networks around and my phone doesnt lose any battery over night.
At my girlfriends place there are like 25 networks around and my phone loses >20% overnight.
Realy strange.
Maybe it has something to do with wifi scanning in the background?
Click to expand...
Click to collapse
Nah.. Think it's the wifi configuration on the router. When I switched ISPs, I was given a new router and the drain disappeared.
There have always been 4 wifi networks that show up on my devices.