Lets Chat Messenger is a FREE messaging app available for Android smartphones. Lets Chat uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message friends and family. Switch from SMS to Lets Chat to send and receive messages, photos, Pdf files and Docs files. WHY USE LETS CHAT: • NO FEES: Lets Chat uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message friends and family, so you don't have to pay for every message.