Why is my phone making calls to unknown numbers while on phone lock?

[AC Question]

Lately my phone has been calling 00449825131808 or the same number but ending in 3, 5, 6 or 7 while on phone lock and while on charge for some unknown reason and I don't know why? What is the reason for this? I've reset my phone and taken the battery out and every now and then it does it my phone lights up while on charge and phone lock still and tries calling those numbers but I stop it before it happens what is up with my phone?

 

[belodion]

Welcome to Android Central.

Have you tried Safe Mode?

Are you using an SD card, which, if corrupt, may be causing trouble?

Also, what country are you in?

Posted via the Android Central App

 

[Golfdriver97]

Does your phone also seem to react to touches that you aren't making?