Adafruit 2691, Mobile Communication (Cellular) FONA 3G GSM

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

Adafruit FONA 3G Mobile Communication Breakout Board - EU Version

This breakout board from Adafruit provides a simple way to add 3G mobile communication and GPS location data to your project. Measuring just 5 x 4.6 cm it is perfect for portable projects or remote location monitoring. Whether you need to use location-tracking, voice calls, SMS text messaging or data, you can with the FONA 3G board.

The board features a SIM5320 cellular module with integrated GPS. An active antenna is recommended for GPS.

Adafruit are currently working to add full GPRS TCP/IP and HTTP support. This module is recommended for experienced engineers. If you are just starting out with mobile communications then the Adafruit Mini Mobile Boards are a more suitable starting point (RS 124-5475 / 124-5474).

- Onboard LiPo/Li-Ion battery charging circuit and battery connector. 500 mAh battery or larger recommended
- Micro-USB for easy battery charging and two status LEDs
- Standard 4-pole TRRS headphone jack to connect headsets
- Breakouts for external 8 Ω speaker and electret mic if you don't want to use a headphone
- Level shifting circuitry enables 2.8 V to 5 V logic
- uFL connectors for external antennas (GPS and 3G/GSM)
- Indicator LEDs for power and network connection
- Standard size SIM card socket

3G Mobile Communication Specifications

- Worldwide 2G compatible - Quad Band - 850 MHz GSM, 900MHz EGSM, 1800MHz DCS, 1900MHz PCs
- European 3G compatible - Dual-band UMTS/HSDPA 900/2100MHz WCDMA + HSDPA
- Integrated GPS - Qualcomm PM8015 GPS
- Make and receive voice calls using a headset or an external 8Ω speaker + electret microphone
- Send and receive SMS messages
- Send and receive GPRS data (TCP/IP, HTTP, etc.)
- AT command interface
- USB support - serial ports for AT commands, GPS NMEA and modem

GPS specifications

- 16 acquisition channels
- GPS L1 C/A code


- Tracking: -157 dBm
- Cold starts : -144 dBm

- Cold starts: 100s (typical)
- Hot starts: 1s (typical)
- Accuracy: approximately 2.5 metres

Recommended Accessories

2G or 3G SIM card (Required)
LiPo/Li-Ion Battery - 500mAh minimum (RS 791-6460)
Micro USB cable (RS 121-3251)
External uFL GSM Antenna (RS 704-3417)
External Active GPS Antenna (RS 896-8285)
TRRS 4-Pole Headset
Product Dimensions: 50 x 46 x 7.0 mm (2.0" x 1.8" x 0.3")
Product Weight: 50 g (1.8oz)


This module requires a microcontroller to function for example an Arduino UNO (715-4081). Any 3V to 5V microcontroller with a UART can send and receive commands over the RX/TX pins.

Mobile Communication (Cellular) Modules - Adafruit

Attribute Value
RF Technology Mobile Communication (Cellular)
Kit Name FONA 3G GSM
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Price Each
£ 60.96
(exc. VAT)
£ 73.15
(inc. VAT)
Per unit
1 - 4
5 - 9
10 +
Not available for guaranteed pre 9am/10am delivery
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