Invalid Android system spends a lot of battery


Feb 21, 2019
1
3
I have a problem, and is that the Android system spends a lot of battery, sometimes even 30% someone has a solution to this? I have a mi max 3 with the last weekly version without root, although this problem came to me after updating to 9.2.14. thanks in advance and forgive my English so bad
 
Too general, we don't have the device and even if we did - it would be like searching for a ghost.