SilenceMaster is a simple to use app to manage Silence mode of the phone. It
can be used to switch the phone to Silent, Vibrate or Normal mode.
Besides switching between silence modes you can also set the silence mode duration.
SilenceMaster also allows you to setup exception list. If exceptions are allowed, then all incoming calls from Contacts in exception list will enable the phone ringer and calls from other Contacts will leave the phone in Silence mode.