SIM: Subscriber Identity Module

IMEI: International Mobile Equipment Identity

SMS: Short Message Service

MMS: Multimedia Messaging Service

GSM: Global System for Mobile Communications

CDMA: Code Division Multiple Access

LTE: Long-Term Evolution

Wi-Fi: Wireless Fidelity

NFC: Near Field Communication

GPS: Global Positioning System

USB: Universal Serial Bus

OTG: On-The-Go

HDR: High Dynamic Range

LED: Light Emitting Diode

OLED: Organic Light Emitting Diode

LCD: Liquid Crystal Display

AMOLED: Active Matrix Organic Light Emitting Diode

APN: Access Point Name

VoLTE: Voice over Long-Term Evolution

VoIP: Voice over Internet Protocol

RAM: Random Access Memory

ROM: Read-Only Memory

USB-C: USB Type-C

IR Blaster: Infrared Blaster

OIS: Optical Image Stabilization

EIS: Electronic Image Stabilization

FM Radio: Frequency Modulation Radio

PIN: Personal Identification Number

PPI: Pixels Per Inch

mAh: Milliampere-hour

GHz: Gigahertz

Bluetooth: Named after a 10th-century Danish king, Harald “Bluetooth” Gormsson

SSID: Service Set Identifier

VPN: Virtual Private Network

APK: Android Package Kit

iOS: iPhone Operating System

ADB: Android Debug Bridge

OEM: Original Equipment Manufacturer

PDF: Portable Document Format

JPEG: Joint Photographic Experts Group

PNG: Portable Network Graphics