Why is my Nokia Lumia 625 Phone restarting without any prior notice?

[Windows Central Question]

Nokia Lumia 625 Phone restarting without any prior notice.

When i use to play games or open apps phone switch off and restarts automatically without any prior notice. At same time back side of phone means battery also getting heat. Please help me to find what the problem exactly and how to resolve it.

 

[Teo Bartulovic]

Re: Nokia Lumia 625 Phone restarting without any prior notice.

Are you on WP8.1 or W10M?! However I would suggest to make back up and than proceed with hard reset...