User's Manual

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card. It is used to unlock the SIM card if you have
entered 3 incorrect PIN code or to modify your PIN
code.
PUK2 Personal Unblocking Key 2，provided with the SIM
card, is used to modify or unlock the PIN 2 code.
IMEI International Mobile Equipment Identity，consisted
of 15 numbers，is unique for each mobile
MCC Mobile Country Code, for example: China
(Mainland) is 460
MNC Mobile Network Code, for example:
China Mobile is 00 and China Unicom is 01.
Call waiting Calling waiting is a network service, which
allows you to answer the incoming call when
you are already on line without hanging up the
current call. It is different from Conference
calls because you can only talk to one
correspondent but hold on another call.