Communication module 4G/3G/2G/GSM/GPRS Grade 3 (2 SIM slots).
Setting up 2G/3G connection on Windows Mobile/WEH - Handheld
2G/GPRS/EDGE Support (GERAN) - OpenEPC
4G / 3G / 2G / GSM / GPRS / GNSS HAT for Raspberry Pi, LTE CAT4, the Global Version - PiShop.us
Amazon.com: 4G 3G 2G GSM GPRS GNSS HAT Based on SIM7600G-H LTE CAT4 150Mbps Wireless Communication Telephone Call SMS Positioning for Raspberry Pi 4 3 2 Model B B+ Zero W WH