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4 Cards in this Set

  • Front
  • Back

CDMA [Code Division Multiple Access]

No sim, North America, Updates PRI constantly, Uses baseband for updates

GSM [Global System Mobile]

Sim card activates phone, Date and Voice simultaneously

IMSI [International Mobile Subscriber Identity]

Rate Plans, Subscriber's ID, Tied to SIM card

IMEI [International Mobile Equipment ID]

Phone's unique ID, GSM stores IMEI on global provider database, Tied to usage