Retired Product

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Adafruit FONA – Mini Cellular GSM Breakout uFL Version


Adafruit FONA – Mini Cellular GSM Breakout uFL Version


SKU: GSM-001 - Mfg Part Number: 1946


Have you ever wanted to add cellular voice / data / SMS capabilities to your project? This module measures only 1.75″x1.25″ but packs a surprising amount of technology into it's little frame. At the heart is a GSM cellular module the size of a postage stamp. On its own, this module can't do anything – it requires a microcontroller to drive it. We suggest an Arduino or Adafruit Metro but any 3-5V microcontroller with a UART that can send and receive commands over the RX/TX pins will work.

There are a few required accessories to get this board up and running:

  • SIM Card – A 2G Mini SIM card is required to do anything on the cellular network. In Canada we recommend Rogers as a cellular provider.
  • LiPo Battery – 500mAh or larger!
  • External Antenna – We carry a slim uFL antenna that works great!

There are also some recommended accessories that are not required but chances are you'll want them!

  • TRRS 4-Pole Headset – Any 'iPhone' or 'Android' compatible should work.
  • External Mic & Speaker – If you want to talk directly to your FONA, an electret mic and mini 8 ohm speaker will do quite nicely.
  • Vibrating motor – the FONA can drive this directly, just solder a mini vibrating motor disc in!


  • Send and receive GPRS data (TCP/IP, HTTP, etc.)
  • Scan and receive FM radio broadcasts
  • Make and receive voice calls using a headset OR an external 8Ω speaker + electret microphone
  • AT command interface with “auto baud” detection
  • Standard 4-pole TRRS headphone jack
  • Level shifting circuitry so you can run it with 2.8V to 5V logic
  • Quad-band 850/900/1800/1900MHz – connect to any compatible GSM network with 2G SIM
  • Send and receive SMS messages
  • PWM/Buzzer vibrational motor control
  • Onboard LiPoly battery charging circuitry
  • Breakouts for external 8Ω speaker and electret mic
  • Indicator LEDs for power and network connectivity


Out of stock

SKU: GSM-001.
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Additional information

Weight 11 g


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