B-SMS

If you've ever been in an area without Cell Service, or you don't want to send SMS messages through your carrier/Wi-Fi, or if you simply want a way to communicate with others using nothing more than Bluetooth, B-SMS is for you.
B-SMS lets you send text messages to other people using only Bluetooth. No need for a data plan or WiFi! If multiple users nearby are running B-SMS, you can send messages to others even if you're not physically close enough to connect directly to them! Conversations are saved so that you can continue where you left off if your Bluetooth connection is interrupted.
So, if the cell towers ever go out, you find yourself in a situation where you don't want to (or can't) send a message using your data plan or Wifi, or if you just want to send messages in the coolest new way, B-SMS is the app to have.