Raspberry Pi SixFab IoT Gateway Quickstart - Hackster.io
Amazon.com: 4G / 3G / GNSS HAT Module for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B/Jetson Nano, Based on SIM7600A-H , 4G Communication and GNSS Positioning Module Support LTE CAT4 up to 150Mbps :
IoT Bit 4G & LTE HAT for the Raspberry Pi - Hackster.io