My Samsung galaxy M21 is automatically restart and start per hours pls help me.

[Vanshparekh12]

Dear Sir,

 This is to inform you that my galaxy M21 phone is restating automatically before on 45 days above so I'll need you help for this query as soon as possible because it's a major issue so please I request you it to be resolved if.....

[WARLORD3415]

Even I have the same problem on my galaxy m31 only when I try to install any large apps or games.

[NOOB_1ST_ACC]

Do factory data reset

[NOOB_1ST_ACC]

Or go to samsung service centre and tell them that I am facing software issues give my phone a software reinstallation.

[Nishan22]

Motherboard problem