Sound & Display settings greyed out...
 

Hey guys,

New to Android and have what I hope is an easy problem.

Within "Sound & Display" inside of settings, almost all of the options are greyed out.
For example: Phone ringtone (and about 70% of all the other options).

How exactly do I "unlock" these configuration options?

Thanks in advance.

EDIT
NEVERMIND!!
Apparently it was because I had the volume turned to vibrate...doh....