Chosen Solution
The phone’s power button is so sensitive and it acts with a slight touch on power or on top of the volume buttons.
Probably the power button is worn out from being clicked too much. Replacing the power button assembly should fix the problem. Where to buy the part: https://www.gearbest.com/cables-adapter/… Guide to replace the part: https://www.youtube.com/watch?v=TSLRc0n6…
