Don't know if possible but want to ask first before going to long way. Is it possible to use a driver or a library for UART GSM modems ?
Then we could just use them like wifi network.
Edit : I am using WICED 5.0.1 on Redbear Duo
Yes, you can connect the UART to connect to a GSM Modem. You will have to port the modem driver / library to WICED.