Chat with all your contacts – fast, easy, and cheap
Facebook's official messaging application
A fast and -most importantly- secure messaging system
An official Facebook messaging client that's a whole lot lighter
Instant messaging with all of your friends
Samsung's own official MMS and SMS app
A lightweight version of Imo
A really private instant messaging app
Free calls and texts
An open source email client with an emphasis on privacy
Use two telephone numbers with WhatsApp
Samsung's official messaging app
Instant messaging, calls, and much more
A messaging app with an integrated web browser
Check out Telegram's latest features before anyone else
Manage the SMSs and MMSs on your Samsung device
Make phone calls for free
The official messaging app from OnePlus
A Vietnamese IM app
A messaging tool for teams
A messaging tool that's popular in Africa
Perform quick searches with your Xiaomi smartphone
Send text messages for free
Unlimited free HD video calls and voice chats
A super safe email app
Manage all your email accounts from the same app
A truly instant messenger
Alternative WhatsApp client full of unique features
An unofficial Telegram client with added features
All you need in an Android email client
The best substitute for your messaging application