Q: Can iPhone ring when locked?

You da' man!!  This worked for me as well, even after I went back in and turned "Assistive Touch" off.

This seems to be a bug of the silence button. After you turn it off and turn it back on (red hidden), you would have to

go to settings and unlock the sound as following:

settings--> sound-->lock sound

turn it off, and then turn it on.

The sound will come back.

I missed a month of my incoming calls before I finally figure out the problem.

Ray

guoweiming wrote:

 

This seems to be a bug of the silence button. After you turn it off and turn it back on (red hidden), you would have to

go to settings and unlock the sound as following:

settings--> sound-->lock sound

turn it off, and then turn it on.

The sound will come back.

I missed a month of my incoming calls before I finally figure out the problem.

All that setting does is turn on or off the sound the button makes when you lock or unlock the phone. It has nothing to do with Do Not Disturb, ringtones or any other sound. While it's great that your phone is now working properly, that's most likely not the reason.

Thank you.  You nailed it.  Grandchildren play with phone and must have pushed on mute button.