My samsung 7 rings and when I answer it hangs up what can I do to fix it.

[Android Central Question]

My samsung 7 rings from incoming call and when I answer it hangs up. What can I do to fix it.

 

[B. Diddy]

Welcome to Android Central! Are you certain these aren't spam or prank calls? Does it happen with confirmed calls from known contacts? Are you able to make outgoing calls?