How do I get rid of add any on the screen when I am having a conversation, I apparently touch that with my cheek and it calls someone radamly from my contact list. HELP

There is a proximity sensor near the top of the phone that disables the screen when you hold the phone to your ear. Some cases and screen protectors will block it, preventing it from working. So the first step is to see if removing your case fixes the problem. If it doesn’t your phone may have a hardware problem; use the Get Support link at the top of this page to discuss repair options.