SMS
Short Message Service

MMS
Multimedia Messaging Service

VoIP
Voice over Internet Protocol

IP
Internet Protocol

URL
Uniform Resource Locator

IM
Instant Messaging

Chat
Chat Application

RT
Retweet (used on social media)

DM
Direct Message

FAQ
Frequently Asked Questions

E-mail
Electronic Mail

BBM
BlackBerry Messenger

Wi-Fi
Wireless Fidelity

VPN
Virtual Private Network

SIP
Session Initiation Protocol