Adafruit FONA 808 Mini Cellular GSM + GPS Breakout

Compact breakout combining a quad-band GSM module (850/900/1800/1900 MHz) with an MT3336 GPS receiver (2.5 m accuracy, 30 s cold start) on a single board. UART interface, 2.8–5V logic, onboard LiPo charging, and TRRS audio jack.

Logical pinout · physical placement not verified

VIO
Type · Power
5V
Type · Power
GND
Type · Ground
KEY
Type · Control
RST
Type · Control
RX
Type · UART
TX
Type · UART
RTS
Type · UART
CTS
Type · UART
DTR
Type · Signal
RI
Type · Signal
PS
Type · Signal
NS
Type · Signal
SPK+
Type · Signal
SPK-
Type · Signal
MIC+
Type · Signal
MIC-
Type · Signal

Pin	Type
VIO	Power
5V	Power
GND	Ground
KEY	Control
RST	Control
RX	UART
TX	UART
RTS	UART
CTS	UART
DTR	Signal
RI	Signal
PS	Signal
NS	Signal
SPK+	Signal
SPK-	Signal
MIC+	Signal
MIC-	Signal

Logical pinout · physical placement not verified

Pin details

17 connections

VIO
Power
5V
Power
GND
Ground
KEY
Control
RST
Control
RX
UART
TX
UART
RTS
UART
CTS
UART
DTR
Signal
RI
Signal
PS
Signal
NS
Signal
SPK+
Signal
SPK-
Signal
MIC+
Signal
MIC-
Signal

Start wiring

UART · I2C · USB · 3.3 – 5 V · Breakout

Confirm the data interface matches your host board.

Module pins: VIO, 5V, GND, RX, TX, RTS, CTS, DTR. Schematik maps them to your board in the app.

GNSS & GPS

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Pinout