I'm with CA001....
1) The DND IS FRIGGIN OFFFFFFFFFF
2) I'm not an idiot. The switch on the upper left is not showing red, not muted, not off, not making it no ringy-dingy
3) The phone rings when not locked
4) The phone doesn't ring when locked. Period.
5) It's not signal, this happens when I'm making sweet love to a cell tower.
6) I have inbound calls set to show on lock screen even.
I'm a Sprint network engineer, I know more about the network than you. It's the OS.
My thoughts...the DND is actually on when the phone is locked. Regardless of what it says.
Does anyone have anything new and relevant in regards to a fix or work around??
Don't tell me to look at DND (item #1 above), Don't tell me to check the mute switch (item #2 above)
Hope everyone appreciates my humor.