My phone goes off on any incoming calls

[Android Central Question]

Why is there no ringtone on my incoming calls and goes off and on again on its own when ever a call comes in and so is the alarm,,, please help!

 

[B. Diddy]

Welcome to Android Central! Which phone? Does this happen for any kind of sound through the main speaker (e.g., does this happen when you're trying to listen to music as well)?