TIME NOT UP TO DATE

ecto

Hello,
I have a problem with my Umidigi S3 Pro.
Simply, the time showed at the top left of the screen

most of the time isn't up to date.
In fact, the time showed by the big main clock is the correct one.
It seems like that when the screen is turned off for some time and then turned on, the clock at the top left is not updated.
It updates only after some minutes.


See my attached image.

I do not remember when the problem appeared, for sure months ago,

I can only say that I've never had the freezing screen problem.
I also installed the latest firmware some days ago and nothing changed.

Is someone experiencing the same strange issue?

Thanks
Bye

ecto

I solved.
Settings -> app -> special access -> battery optimization.
Set SYSTEM UI to NOT OPTIMIZE.