Acer S100 - Manual (Page 25)

25 The voice call screen
Warning: International call rates can vary greatly depending on the
country you are calling and your network provider. We suggest you
check all call rates with your network provider, to avoid excessive
phone bills. If you are using your smartphone abroad, roaming
charges will apply. Consult your network provider for roaming
rates specific to the country you are visiting before you leave.
The voice call screen
Once you have dialed your number the voice call screen
appears, which displays the number/contact you are talking to,
the call duration and the dialpad tab.
Onscreen call options
Answering a call
Press Answer to answer a call.
Rejecting a call
Tap Reject to reject a call.
Ending a call
To end a call, press .
Using the speakerphone
The speakerphone function allows you to make calls without
having to hold your smartphone. This handsfree function is
especially useful for multitasking.
To activate the speakerphone, tap Speaker. Tap Speaker again
to disable the speakerphone.