A51 Restart issue

[yarfa]

Please someone knows the reason why Samsung galaxy A51 keeps on restarting after 6 to 7 days without any reason.

If someone knows how to fix let me know please

I took my phone to Samsung service center they kept my phone for 7 days and said they have fix this thing 

But still I'm facing this issue

Somebody please help

[innovativeAR121]

Bro turn off auto restart option

[yarfa]

Bro it's already turned off

[innovativeAR121]

After off turn off your phone then see
If not good then off it and reset it its works I assure you

[yarfa]

I reset it 3 to 4 time but all is vain

[innovativeAR121]

Bro factory reset kia ya kuch or

[yarfa]

2 3 dafa factory data reset ki magar issue theek na howa

[innovativeAR121]

Phr khai check krwaya

[yarfa]

Service center check karwaya tha uney kaha charging port keh pass koi issue hai humney theek Kar dia hai
Magar theek nahi howa

[innovativeAR121]

Ok kaha rhty ho