| AGPS | Assisted Global Positioning System |
| AMPS | Advanced Mobile Phone System |
| ANI | Automatic Number Identification |
| API | Application Programming Interface |
| ARPU | Average Revenue Per User |
| BaaS | Backend as a Service |
| BREW | Binary Runtime Environment for Wireless |
| BSC | Base Station Controller |
| BLE | Bluetooth Low Energy or Bluetooth Smart |
| BTA | Basic Trading Area |
| BTS | Base Transceiver System |
| CDMA | Code Division Multiple Access |
| CDPD | Cellular Digital Packet Data |
| CLEC | Competitive Local Exchange Carrier |
| CPE | Customer Premises Equipment |
| CSS | Cascading Style Sheet |
| DOM | Document Object Model |
| DSP | Digital Signal Processor |
| DVB-H | Digital Video Broadcast – Handheld |
| EDGE | Enhanced Data for GSM Evolution |
| ESMR | Enhanced or Extended Specialized Mobile Radio |
| EV-DO | Evolution Data Only |
| FDD | Frequency Division Duplex |
| GMSC | Gateway Mobile Switching Center |
| GPRS | General Packet Radio Service |
| GPS | Global Positioning System |
| GSM | Global Systems for Mobile Communications (originally Groupe Special Mobile (French)) |
| HLR | Home Location Register |
| HSDPA | High Speed Downlink Packet Access |
| HSUPA | High Speed Uplink Packet Access |
| HTML | HyperText Markup Language |
| IaaS | Infrastructure as a Service |
| iDEN | Integrated Digital Enhanced Network (Motorola TDMA) |
| ILEC | Independent Local Exchange Carrier |
| IMS | IP Multimedia Subsystem |
| IoT | Internet of Things |
| IP | Internet Protocol |
| J2ME | Java 2 Platform, Micro Edition (old) |
| Java ME | Java Platform, Micro Edition (new) |
| LAN | Local Area Network |
| LEC | Local Exchange Carrier |
| LoRa | Long-range (Radio) |
| LoRaWAN | Long-range (Radio) WAN |
| LTE | Long Term Evolution |
| M2M | Machine-to-machine (Communication) |
| MIMO | Multiple Input, Multiple Output |
| MMDS | Multichannel Multipoint Distribution Service |
| MMS | Multimedia Messaging Service |
| MOU | Minutes of Use |
| MSC | Mobile Switching Center |
| MT | Mobile Terminated (e.g. SMS) |
| MO | Mobile Originated (e.g. SMS) |
| MVNO | Mobile Virtual Network Operator |
| NFC | Near Field Communication |
| OS | Operating System |
| OTA | Over The Air |
| PaaS | Platform as a Service |
| P2P | Peer-To-Peer |
| PCS | Personal Communications System |
| PHS | Personal Handyphone System |
| POTS | Plain Old Telephone Service |
| PSAP | Public Safety Answering Point |
| PSTN | Public Switched Telephone Network (= POTS) |
| PTT | Push To Talk |
| QR | Quick Response (Code) |
| RBOC | Regional Bell Operating Company |
| RF | Radio Frequency |
| RFID | Radio Frequency Identification |
| RNC | Radio Network Controller |
| RTT | Round-trip Time |
| SaaS | Software as a Service |
| SIM | Subscriber Identity Module |
| SIP | Session Initiation Protocol |
| SMR | Specialized Mobile Radio |
| SMS | Short Message Service |
| SVG | Scalable Vector Graphics |
| TDD | Time Division Duplex |
| TDMA | Time Division Multiple Access |
| TD-SCDMA | Time Division Synchronous Code Division Multiple Access (phew!) |
| UMA | Unlicensed Mobile Access |
| UMTS | Universal Mobile Telecommunications System |
| UWB | Ultra Wideband |
| VoIM | Voice over Instant Messaging = VoIP |
| VoIP | Voice over Internet Protocol |
| WAN | Wide Area Network |
| WAP | Wireless Application Protocol |
| W-CDMA | Wideband Code Division Multiple Access |
| WICD | Web Integration Compound Document |
| Wi-Fi | Wireless Fidelity (IEEE 802.11b WLAN) |
| WiMAX | (or WirelessMAN) Wireless Metropolitan Area Network (IEEE 802.16) |
| WLAN | Wireless Local Area Network (typically IEEE 802.11) |
| WLL | Wireless Local Loop |
| VLR | Visitor Location Register |
| WML | Wireless Markup Language |
| VoIP | Voice over IP |
| XHTML | Extended HyperText Markup Language |
