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7. Abbreviations
SMS
Short Message Service
EMS
Enhanced Message Service
SIM
Subscriber Identity Module
GSM
Global System for Mobile Communication
PIN
Personal Identity Number
PUK
PIN Unblocking Key
IMEI
International Mobile Equipment Identity
CB
Cell Broadcast
GPRS
General Packet Radio Service
MMS
Multimedia Message service
Card
1
Host card (the card inserted in SIM1 slot)
Card
2
Slave card (the card inserted in SIM2 slot)