Why does my phone start calling random telephone numbers by itself and then turn itself off and on.

[AC Question]

I can have my phone just sitting on the table and speaking to someone else and all of a sudden it will say that it is calling someone and then it will turn itself off when I reach over and hit stop on the phone call. This happens to both myself and my husband's phone they are both Droid Maxx's

 

[Tim1954]

Have you scanned it with a reliable malware scanner?