Below is a list of the common cell phone acronyms, their meaning and a brief description in plain english.  Note that each line is hyperlinked to a webpage to provide more detail, if you want it 🙂

CODEMEANINGSIMPLE DESCRIPTION
1GFirst Generation cellular networkanalog on FM band just for phone calls
2GSecond Generation cellular networksome digital transmission with basic data using CDMA or GSM
3GThird Generation cellular networkdata and voice on same network  using WCDMA & UMTS
4GFourth Generation cellular network100-200Mb/s internet on cellular – 2018 Standard using LTE & MIMO
5GFifth Generation cellular network1000Mb/s (gigabit) internet on cellular – early 2020’s using MWMCM
AMPSAdvanced Mobile Phone Services1G analog mid 19580’s technology allowed calls in one country
APNAccess Point Namethe Gateway between cell and non-cell (i.e. land) internet
CDMACode-Division Multiple Access3G technology to simultaneously sending & receiving on the same channel
CDMA2000Code-Division Multiple Access in Year 2000aka C2K – better version of CDMA but still 3G
EDGEEnhanced Data For GSM Evolution200kb/s – next generation GSM
ESNElectronic Serial Numberserial number transmistted to cell towers
FREEZEnot an acronymappeas after unlock code wrongly entered too many times
GPRSGeneral Packet Radio Services2.5G or 3G technology 56 – 114 Kb/s internet connection
GSMGlobal System for Mobile communication50kb/s popular in Europe using TDMA
HSPDAHigh Speed Downlink/Uplink Packet Access5 – 30MB/s cellular data popular in India sometimes called 3.5G
ICCIDIntegrated Circuit Card IdentifierSIM card serial number
IMEIInternational Mobile Equipment Identity15 characters
LTELong Term Evolution4G data network with many different iterations inc. LTE2, LTE+, LTE Advanced
LTE-ALong Term Evolution Advancedwrongly called 5G, just another, faster version of LTE
MCKMaster Control KeyUnfreeze Code for Samsung
MEIDMobile Equipment Identifierglobal serial number just like IMEI developed by a different organization
MIMOMultiple Input Multiple Outputusing more than one connection at the same time
MMSMultiMedia Message Servicesending formatted text or pictures over a cell network – the new SMS
MWMCMMillimeter Wave Mobile Communications, Massive MIMO5G – using a lot of connections at the same time
NCKNetwork Control Keycode to unlock cells
OFDMOrthogonal Frequency Division Multiplexinga way of combining different streams
SIMSubscriber Identity Modulesmall chip used to verify identity with cell towers
SMSShort Message Serviceplain text messages sent over the voice network – original texing!
TDMATime Division Multiple Access2G & 3G technology competing with CDMA and used inside GSM
UDIDUnique Device IdentifierApple only serial number
UMTSUniversal Mobile Telecommunications Service3G technology used in GSM to get 2mb/s
WCDMAWideband Code Division Multiple AccessFaster CDMA but largely incompatible with CDMA replacing GSM
WiFinot an acronym for anything – made uplocal wireless networks
WiMAXWorldwide Interoperability for Microwave AccessWiFi like technology that communicates up to 10 Kilometers -Dead?

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