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How to save battery while on WiFi

Not sure why this is or if this is true with other phones or just the G2X BUT...
If you connect to an WiFi AP that is 802.11G instead of 802.11G/N or just 802.11N your battery life will drastically improve.
I have a Wifi AP with 802.11G/N and was using it all this time. I decided to switch it to G only and wow, the battery drains a lot less than when on N.
Seems odd but it is what it is. Not sure if this has anything to do with reboots (most of mine have been on WiFi) but will report back if I still see reboots while on Wifi now that I'm on G.
Try it out and post your experiences.

What I've tried is setting the Wi-Fi to never turn off and it's saved a lot of battery when sleeping. I heard somewhere that letting the Wi-Fi turn off while the phone was sleeping causes it to go back to 4G/3G to push notifications/refresh data and that takes much more battery than if the phone had just been on Wi-Fi to begin with. Only lost 3% in an hour.
Setting > Wireless and Networks > Wi-Fi Settings > Menu Button > Advanced Settings > Wi-Fi Sleep Policy > Change to Never. I know it sounds weird, but try it out yourself.

Already have that set. Use Never on all my Android phones.
dj75728 said:
What I've tried is setting the Wi-Fi to never turn off and it's saved a lot of battery when sleeping. I heard somewhere that letting the Wi-Fi turn off while the phone was sleeping causes it to go back to 4G/3G to push notifications/refresh data and that takes much more battery than if the phone had just been on Wi-Fi to begin with. Only lost 3% in an hour.
Setting > Wireless and Networks > Wi-Fi Settings > Menu Button > Advanced Settings > Wi-Fi Sleep Policy > Change to Never. I know it sounds weird, but try it out yourself.
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Sent from my LG-P999 using XDA App

Although I use a Desire HD I have had massive problems since the beginning when wifi was on.
Since then I have read countless hours and have tried almost everything I read but to no avail.
I also tried changing the router settings from 802.11 b/g auto to 802.11 G only and that worked for a day or two giving me good batt life but then the drain came back again...
I am almost sure that the router is the prblem but until now I have not found a definitive solution to this...

WiFi stays on regardless of sleep policy.

Ever since updating my Moto G to KitKat wifi remains on all the time even if I select 'Only when plugged in' for the wifi sleep policy. It was fine while on Jelly Bean. Anyone else have this problem?
Sent from my XT1032 using Tapatalk

madgibbon said:
Ever since updating my Moto G to KitKat wifi remains on all the time even if I select 'Only when plugged in' for the wifi sleep policy. It was fine while on Jelly Bean. Anyone else have this problem?
Sent from my XT1032 using Tapatalk
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i had the same issue and posted the question here in the forum i got some replies, but nothing helped. here is the link to my thread
http://forum.xda-developers.com/showthread.php?t=2608546
hope some one responds to our issue.

Interestingly I've solved the problem, on my phone at least. I switched from ART back to Delvik runtime as a few apps wouldn't run and now WiFi is switching off when the screen is off.
Sent from my XT1032 using Tapatalk

madgibbon said:
Interestingly I've solved the problem, on my phone at least. I switched from ART back to Delvik runtime as a few apps wouldn't run and now WiFi is switching off when the screen is off.
Sent from my XT1032 using Tapatalk
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I experienced what I believe to be the same issue with my N5 - I used to have my wifi policy set to "Never" so that wifi would be turned off when the screen is off and it used to work. Recently I thought I'd give ART a shot and after using it for a while, found that wifi stayed on regardless of what the policy was set to. I disabled all background syncing apps (google account, fb, etc.) and all location services and the wifi never switched off the way it used to. I also tried wifi optimisation on/off, avoid poor connections on/off, and always searching on/off but nothing fixed it.
Even after switching back to Dalvik though, it still doesn't work properly. Currently doing a factory reset and will see if it works after and report back

Any solution yet? Mine does the same and I tried everything, from turning off location to uninstalling maps (seeing they have an option to activate wifi) to factory reset and nothing helped.

Advanced Wifi Settings
In Advanced settings is Scanning always available
ensue this is off,otherwise location services will look for networks even if wifi is off,so presumably it turns it on to do this!

robin0800 said:
In Advanced settings is Scanning always available
ensue this is off,otherwise location services will look for networks even if wifi is off,so presumably it turns it on to do this!
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Like I said, I have tried all settings. Scanning always available is off and even disabled location services.

jimakos29 said:
Like I said, I have tried all settings. Scanning always available is off and even disabled location services.
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Finally my phone alive now with fastboot downgrade with 4.3 brazilian retail version .only problem is that wifi is not working.plse help

please check the router setting of which the device connect access to internet, under wifi setting in the router homepage check if the channel is not selected to AUTO, please choose channel ex: 1,2,3,4,5 etc and connection frequency to single band i.e 20MHZ or 40 MHZ, but it might also work in auto band mode selection. I had the same issue on my HTC A9 android version marshmellow but when i changed the setting it works fine.

In my experience with Stock ROMs, this issue (Wi-Fi always active in Battery Stats even though sleep policy is set to: Never) is caused by an installed app.
Viber has a setting in General > Wi-Fi sleep policy.
Not every app will have such an option, but check. All you can do if the issue persists is to clean install ROM and one by one start adding your apps to see when the problem reoccurs.
There may be apps (or an xposed module) that will allow you to stop apps changing the Wi-Fi sleep policy. I've not done any research on the topic.
Wi-Fi Scanning can be enabled or disabled and does not have an affect.

[Q] [Help] Wifi drains battery even though turned off (Lollipop)

Hi everyone,
I am new here, and would like some help with my Nexus 5.
It is running stock rom and everything, Android 5.0.1 LRX22C
I am still setting up, so still using my old phone while I get all the mandatory apps on before i switch my SIM over.
I realised that battery seems to be draining rather quickly even it spends most of its time on just Wifi right beside the router. Cellular connection is not on. So one day I decided to turn it to airplane mode and see what happens.
As you can see from the attachment, WiFi was on all the time even though the phone was on airplane mode. I believe this is the cause of the battery drain. I did not turn WiFi on.
"Scanning always available" was turned off, and the top battery drainer is "Android system", but at only 1%.
(The screenshot was only taken after I reconnected Wifi and downloaded GSam, that explains the notifications.)
Does anyone know the cause of this? I'd prefer if I do not need to factory reset the phone as I am pretty much done setting up everything and I don't want to have to do it all again.
Any help would be really appreciated.
Thanks!

If you go to 'Advanced' there should be an option called 'Keep WIFI on during sleep', click there and then click 'Never' or 'Only when plugged in'. Good luck.

I too had the same problem when i updated to lollipop but after some days of usage i found that in wifi under advance there was a new option scanning always available which was turn on. What this setting do is even if ur wifi is off the app can scan for wifi signals for the location. So if u want to keep ur wifi off just turn off that setting.

I already had it turned off, but the battery settings still reports WiFi as on. Weird thing is GSam says my WiFi is off, so I'm not sure what is the problem now.
It might be the Android System, reporting it uses even more battery than my screen now.
Sent from my Nexus 5 using XDA Free mobile app

how to find which app keeps wifi on all the time in stock 7.0?

How can I find out exactly which app/service keeps my wifi turned on all the time even when the phone is sleeping?
I updated my S7 to 7.0 samsung stock (G930FXXU1DQB1) and was monitoring battery usage with GSam Battery Monitor. In the graphs I can see that wifi always stays on, despite setting the "keep wifi on durign sleep" to "while charging" or "never" (I tried both) in settings > connections > wifi > advanced.
I also turned off location services, turned off "nearby device scanning", turned off "phone visibility".
I also checked most apps that I have installed which I could think could keep wifi on.
I also went in dev options > running services but didn't see many suspects.
Any ideas to pinpoint what keeps it on? Is there a better app that GSam that can tell me which app keeps wifi on?

Keeping wifi on during sleep

How to keep wifi on during sleep?

don't turn it off?

i turned off the power safe mode somehow, it still go to sleep after an hour or so of none usuage

why i need the wifi to be connected always because i am using desktop WhatsApp App. and it got disconnected when the internet is off on my phone.

angka8 said:
why i need the wifi to be connected always because i am using desktop WhatsApp App. and it got disconnected when the internet is off on my phone.
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Try wifi, advanced setting, turn on wifi automatically setting to off.

ZayaanAhyaan said:
Try wifi, advanced setting, turn on wifi automatically setting to off.
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but isn't this automatic connecting to the saved wifi connection when within range? thanks

sleep option has been removed so you can try to disable optimise settings under device care/advanced and see if that hopefully makes a difference and/or go adb route
https://www.androidpolice.com/2017/...y-removed-keep-wifi-sleep-toggle-pixel-2/?amp

raul6 said:
sleep option has been removed so you can try to disable optimise settings under device care/advanced and see if that hopefully makes a difference and/or go adb route
https://www.androidpolice.com/2017/...y-removed-keep-wifi-sleep-toggle-pixel-2/?amp
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Click to collapse
Why did Google always remove features that is good?