M30s frequent restart issue

[Helldown1901]

Hello community,

One of my colleague is having Galaxy M30s, purchase this phone around 6 months ago.

Now, he is facing very frustrating problem. THE PHONE IS RESTARTING every minute, no matter which application you start, it will freeze or restart.

Before any solution  suggested by our community, here are few things which I have done to brought it back on track, but didn't succeed:

1. Auto Optimization is off.

2. Auto Restart is off.

3. Done hard reset from bootloader.

4. Resetting of network, accessibility done

5. Factory reset from setting menu (even after hard reset)

6. None of the third party app installed after format.

After all the above steps done, none of them brought the phone back to normal. I have noticed that sometimes if I keep phone in idle, nothing happens, but as soon as I start using any in built app, the same problem starts again.

So any of community members knows better solution apart from the solution mentioned above please suggest. 

[AMPK]

Go to auto restart if you have programmed any day or time remove that if is off also.

[Helldown1901]

First thing I did after setting up my device was turning off the Auto Restart option, but issue still continuing.

[Samsung_Support3]

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Samsung Customer Support