WhatsApp is the world's most popular chat app, but it can be daunting if you're new. Here's our guide on how to use WhatsApp!

If you don't have a mobile phone or can't send a text message due to a lack of network bars, use the trick below to compose and send a text message via email to an AT&T phone number.

How to encrypt text messages with WhatsApp To ensure that messages between Apple and Android users are encrypted, you can use the text messaging app WhatsApp.