Smartphone wont ring

You may have a app that is controlling master volume on your phone, or your speaker busted.
Did you try rebooting or factory reseting?
 


 
I have done everything factory" reset I still get no sound just vibrate, I have a government ZTE smartphone adroid assurance wireless can u help me?

 


Please cite the source and not plagiarize
https://www.ifixit.com/Answers/View/390163/Why+is+my+phone+not+ringing
 
After trying everything on my phone that was doing the same thing, I have figured it out. Make sure when you are done with your phone, close and clear all apps and hit the power button to sleep or lock. Don't need to shut it down. It has solved the problem for me.