It's 1 and half years old. It's 1 year brand warranty ended in July 2021 and this auto restart issue started in sep. To be frank I used some root and under-clock trick to bypass this issue, worked well for a while. But the same issue came back in Dec...

Followed the same steps as you said. Visited service center and received the job sheet and mailed it to the concerned person. Waiting for an update. My phone model is the Samsung Galaxy M21. I know the model you mentioned is different from what I hav...