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  Swipe down from the status bar to open the notification panel 
and drag the panel downwards. Touch Ring, Vibrate, or 
Silent to switch the phone to vibration or silent mode or turn 
on the sound. 
  Open Settings and touch Sound and vibration, and then 
select Vibrate or Silent to switch to vibration or silent mode. 
Using Do Not Disturb Mode 
You  ca n si le nc e yo ur  ph one  wi th  Do  No t Di st ur b m ode  an d s et  an 
automatic schedule for Do Not Disturb mode. 
Turn On or Off Do Not Disturb Mode 
1.  Open Settings and touch Sound and vibration > Do Not 
Disturb. 
2.  Switch Turn on now on or off. 
Set the Exceptions for Do Not Disturb Mode 
1.  Open Settings and touch Sound and vibration > Do Not 
Disturb. 
2.  Select the following options and choose what to allow. 
  Allow messages from: Allow messages from anyone, 
contacts, or starred contacts, or block all message 
notifications. 
  Allow calls from: Allow calls from anyone, contacts, or 
starred contacts, or block all call notifications. 
  Repeat callers: Allow the phone to ring if the same 
person calls repeatedly within a 15 minutes period.