Cellular GPS tracking, all in one, for your Arduino? Oh yes! Introducing Adafruit FONA 808 GSM GPS Shield, an all-in-one cellular phone module with that lets you add location-tracking, voice, text, SMS and data to your project, in Arduino shield format for easy use.

Please note: The T-Mobile GSM network which is shutting down in the USA over the course of 2020 and beyond, so please be aware these are not for long term usage in the USA! .

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This shield fits right over your Arduino or compatible. At the heart is a powerful GSM cellular module (we use the latest SIM808) with integrated GPS. This module can do just about everything

• Quad-band 850/900/1800/1900MHz - connect onto any global GSM network with any 2G SIM (in the USA, T-Mobile is suggested)
• Fully-integrated GPS ( with -165 dBm tracking sensitivity) that can be controlled and query over the same serial port
• Make and receive voice calls using a headset or an external 32Ω speaker electret microphone
• Send and receive SMS messages
• Send and receive GPRS data (TCP/IP, HTTP, etc.)
• PWM/Buzzer vibrational motor control
• AT command interface with "auto baud" detection

Here's the GPS specifications:

• 22 tracking /66 acquisition channels
• GPS L1 C/A code
• Sensitivity
  Tracking: -165 dBm
  Cold starts : -148 dBm
• Time-To-First-Fix
  Cold starts: 32s (typ.)
  Hot starts: 1s (typ.)
  Warm starts: 5s (typ.)
• Accuracy: approx 2.5 meters

Sounds delicious, right? So we plated this fine module onto a shield with all the extras you need to make your next project shine

• Onboard LiPoly battery charging circuitry so you can take your project on the go.  and recharge via the Arduino when necessary. Two LEDs let you know when its charging and done. You can then flip the switch and use the battery to run your circuit!
• Breakouts for external 32Ω speaker and  if you don't want to use a headphone
• Level shifting circuitry to make it Arduino-safe
•  driver so you can have noiseless notifications
• uFL connection for  & 
• Indicator LEDs for power and network connectivity
• Any standard 2G SIM slides into a secure connector

On its own, this shield can't do anything. It requires a microcontroller like an Arduino to drive it!  You will also need some required accessories to make FONA work. These are not included!

• SIM Card! A 2G Mini SIM card is required to do anything on the cellular network. US AT&T no longer sells 2G SIMs and T-Mobile will shut off their 2G network over the course of 2020.
• Lipoly Battery - 500mAh or larger! This battery,  will work great.
• External GSM Antenna - 
• External Passive GPS Antenna - 

Each order comes with one tested and assembled FONA shield and a stick of 0.1" male header. Required Arduino, SIM card, battery, antenna and other accessories are not included! Some light soldering is required to put the headers onto the shield. 

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

• TRRS 4-Pole Headset - 
• External Mic & Speaker - If you want to talk directly to your FONA, an and  will do quite nicely.
• Vibrating motor - the FONA can drive this directly,