Why my honor holly 2 plus automatically switch off

[AC Question]

I had honor holly 2plus my phone automatically switch off whenever they want please suggest me what to do I was going to service centre but not solve the issues and warranty is over before one month please suggest me what to do now

 

[belodion]

A bad battery? A bad battery connection? Dirty contacts? A bad SD card? A faulty Power switch?

Also, does it happen in Safe Mode?

https://forums.androidcentral.com/showthread.php?t=409154