User's Manual

ENGLISH
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on which phone is the current primary phone. This is different to Call Back, which calls a number stored in the
S4. Call Back will always call the last incoming call received on the S4, regardless of which phone received the
call.
Multiple Calls (Call Waiting)
If you receive an incoming call while you are already on a call, and your phone and network both support call
waiting, then you can use the S4 buttons to either end the current call or put it on hold and take the new call.
When you have a call waiting the S4 will play a sound to alert you:
> Hold the + button for about 1 second to put your current call on hold and answer the incoming call.
> Hold the - button for about 1 second to end the current call and answer the incoming call.
> Once you have a call on hold, you can switch between the calls by holding + for about 1 second. This will put
the current call on hold and switch to the other call.
> If you have a call on hold and your active call ends, then depending on your phone the other call may remain
on hold. If this happens, hold + for about 1 second to release the hold and resume the other call.