S22 Exynos Battery Drain on WiFi

[Members_eT66blW]

Hi, I'm experiencing an issue with WiFi on S22 . When the phone is idle and connected to WiFi it can't switch to "deep sleep" mode and battery drains much faster then when on 4G. 

Is this a known bug ? Does Samsung is working on a fix ? I need to keep the WiFi turned off currently to reduce the idle battery drain, which is pretty annoying. According to multiple threads on Reddit and other sources online I'm not the only one with this issue 

https://www.reddit.com/r/GalaxyS22/comments/t7vsjn/my_exynos_s22_bases_battery_drains_34_overnight/

[mieloncom]

I hope this helps you resolve the problem
Try this.

[Members_eT66blW]

I've tried that already. It doesn't make any difference. Still no "deep sleep". 

[mieloncom]

Did check what's drain the battery 🔋 in the background.?
Also try to wipe the cache partition..
I have used my phone more than two weeks now and everything it's fine.. But some apps used battery high. I putted this apps into deep sleep and now is fine.

[Members_eT66blW]

I've tried the factory reset. Still the same. It is not a specific app causing that. Try to install AccuBattery or GSam battery monitor. If the mobile is connected to WiFi , there is no time spent in deep sleep, with WiFi off and connected to mobile data most of the time the screen is off is spent in deep sleep.

The reason for higher battery drain is that something is preventing the phone from switching to deep sleep mode when on WiFi. Probably some wake lock . It seems to be a bug in fw. It is happening even after factory reset when no other app is installed.

[mieloncom]

This is very big problem, maybe your wifi loses the packets. What provider do you have?? try change the chanel in the router and 2.4g to 5g if you can . Also you can try this trick with bixby rountines. if this not help you just claim your warranty and swap the phone🤔

[Members_eT66blW]

It is happening on both 2.4g and 5g routers even when I'm close to the router. The Galaxy S10 sitting next to it has no issue. 

[mieloncom]

How long do you have s22ultra??
Try the last thing
You need enable developer options mode.
Also, after I can recommend for try wipe the cache partition..
If this will be not resolved your problem, try to contact with the customer service.

[Members_eT66blW]

It's not S22 ultra but S22 base. I have it ten days already. 

I checked the developers options and the "Wi-Fi scan option" is already turned on. I've tried to turn it off if it makes any difference but it doesn't.

I've enabled enhanced battery statistics in the GSam battery monitor using ADB and it seems that Kernel (Android OS) process is keeping the phone awake. Thus it seems to me that it is a software problem that should be fixed by Samsung. I'm not the only one with this problem. 

Can anybody with S22 Exynos confirm that the phone is capable of going into "deep sleep" while on WiFi ? 

[User 9000]

Yes i can confirm. The problem is exactly as you describe it.

When wifi is turned on my phone (s22 base model) can't enter the deep sleep state. 

With wifi off it wil go to deep sleep immediately when the screen is turnd off.

Hope samsung is coming with a patch soon. Otherwise im forced to return this phone.