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 :
4G pHAT for Raspberry Pi - LTE Cat-4/3G/2G with GNSS Positioning | The Pi Hut
USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem - Raspberry Pi Forums
Using 4G LTE wireless modems on a Raspberry Pi | Jeff Geerling
Raspberry Pi 4G/LTE Modem Kit - Sixfab
Get Started with Super SIM, the Raspberry Pi 4 and the Sixfab Base Hat | Twilio