This app can be used to talk with each other and send text messages using an XBee DigiMesh module.XBee module needs to be in API mode with baud rate configured to 57600.Connect your smartphone to the XBee radio using an FTDI USB-to-Serial converter (such as the SparkFun XBee Explorer dongle). This only works for devices with USB Host capability.If your smartphone does not have USB Host capability, the XBee module can be connected through an Arduino Due (which functions as the USB Host). The Android source code and Arduino source code can be found at: https://github.com/Daffern/XBee-TerminalOnly tested with the XBee-PRO DigiMesh 2.4 modules.