Why is the phone (lumia 950 dual) restarting in the middle of most of my calls?

[Windows Central Question]

I'm getting my new phone switching off in the middle of most of the calls. Then it restarts by it self

 

[A_Knauss]

Same thing with my Lumia 950 (not dual)...

 

[Adrian Vogler]

Same with me.
Restarting all the time.
Disabled Auto-install updates with no effect.

 

[mariusmuntean]

congrats on spending over 500$ on a phone that is not able to sustain phone calls...