New POCO F1 lag on lock screen


Nov 17, 2019

It's been over a week that I do not understand why my smartphone (POCO F1) slowed down.

I have the impression that if I leave it locked for more than 10 seconds, it goes into sleep mode. That is, if I use the power button, double tap, or fingerprint sensor to unlock it, it will take ~ 10 seconds to "wake up".

I am currently on the latest version of MIUI, and I tried twice to achieve a factory reset via the menu recovery.

I've also done various tests like killing background apps, adjusting network settings, managing brightness, load / unload tests, but I can not identify the source of the problem.

What can I do to fix the problem?

I think that after resetting the factory settings, which have not changed anything, the problem is hardware.

Thank you very much.