IMEI - International Mobile Equipment Identifier is a unique number used to identify cellular devices. The device IMEI, which is stored on a sim card, is used by GSM networks to validate subscriber use.
SIM - Subscriber Identity Module or Subscriber Identification Module
MEID - Mobile Equipment Identifier
GSM - Global System for Mobile Communications, developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second generation (2G) digital cellular networks used by mobile phones.
EVDO – Evolution Data Only is a 3rd Generation wireless protocol for high speed cellular broadband
IDEN - Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola
SMS – Short Message Service
MMS – Multimedia Message Service
3G – 3rd Generation wireless technology
2G 2nd Generation wireless technology
CDMA - Code Division Multiple Access, a digital cellular technology that uses spread-spectrum techniques which allows more subscribers that comparable technology to connect at any given time.
4G LTE - Long Term Evolution, is a standard for wireless communication of high-speed data for mobile phones and data terminals, based on the GSM/EDGE and UMTS/HSPA network technologies, increasing the capacity and speed using a different radio interface together with core network improvements.