Mongoose OS now supports cellular connectivity via the PPP-over-serial driver.

See implementation at
This driver implements a basic Internet connectivity. Some advanced features like SMS, GPS, are not implemented yet.

You can try it with following modules:

  1. SIM5320E 3G Module GSM Modules
  2. Adafruit FONA 3G Cellular Breakout

To contact: send us a message or ask on the developer forum.