A7 GSM GPRS GPS 3 In 1 Module Shield DC 5-9V STM32 51MCU Support Voice Message | eBay
GitHub - Bidur-Khanal/Raspberry-Pi-GSM-GPS-WIFI: This project includes a python module with functions to send-receive SMS, get GPS coordinates, interfacing Raspberry Pi with GSM/GPS/GPRS module " A7 AI Thinker" using serial UART. It also
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Basics: Project 064a Ai Thinker A7 GSM GPRS GPS module at Acoptex.com / ACOPTEX.COM