Why is my Nokia Lumia 630 turning off and on by itself?

[Windows Central Question]

Why is my nokia lumia 630 keep turning off and on by itself?

My Nokia Lumia keeps turning itself off and on by itself its happened once before and I the battery, so I bought a new one but it has done it again, please help as I really need my phone.

 

[pankaj981]

Re: Why is my nokia lumia 630 keep turning off and on by itself?

It does look like a rogue app. Have you realized if the restarts start happening after installing an app?