Nokia 2160 - Manual (Page 21)

When placing an emergency call, the emergency
number will be displayed only after you have keyed in all
its digits. After the emergency call, Keyguard becomes
active again.
Answering a call with
Keyguard active Press
U
.
During the call the keypad remains unlocked which lets
you operate the phone as usual. After you end the call,
Keyguard becomes active again.
Call Waiting
With Call Waiting, the active call is put on hold as you
answer the waiting (incoming) call. This service is
available only if you have subscribed to it through your
network operator. For details on Call Waiting availability
and operation, check with your network operator.
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