A56 Not receiving cellular calls

[Bojcha]

Since i updated to Android16, i have huge problem with receiving phone calls.
Basicly whenever phone goes to deep sleep i cannot receive calls. Once it's wake, all working fine.

I will not write what i tried to fix this, list is long.. dnd, security, blocked numbers spam calls, permissions, reseting network, bt, wifi...

Last things i tried is to change my sim card since mine was kinda old. That didn't help.
Then i changed to eSIM, also no vail

Anyone has any idea what problem is ?

edit:
So far i found only way to make it to work properly is when i set "Preferred 3G network"
SM-A566BZGVMEA

[Tourbillon De La Vie]

What phone. Deep sleep does exactly what it says

[Bojcha]

This section is for Samsung A series? also clearly says A56?
Deep sleep should not be able disable receiving calls, never was.

[Tourbillon De La Vie]

How is deep sleep enforced. Because as you say somehow it blocks calls

[Bojcha]

Screen goes off and then you wait 2-5 minutes.

[Tourbillon De La Vie]

You haven't changed doze settings? Is some power saving enabled

[Bojcha]

No, power savings is not enabled. 
Messages from viber, telegram, mail, and other apps works fine, just not voice calls when phone sleeps.
On caller side i am busy or not available.

[Tourbillon De La Vie]

5 min is not enough time for deep sleep to kick in unless some manual specific changes. Phone app itself is on unrestricted mode. Something is powering down. Did you try diagnostics via Samsung members app

[Bojcha]

it is 2 minutes actually, Also i tried that app, and says all is perfectly fine. btw app is prety basic.

[Tourbillon De La Vie]

Did you also wipe the phone cache partition?