The Waveshare SIM7600G-H 4G HAT is a compact add-on board designed specifically for Raspberry Pi models, offering support for LTE Cat-4 4G, 3G, and 2G communication. Additionally, it provides GNSS positioning capabilities, making it ideal for applications requiring reliable connectivity and precise location data. Made in China, this 4G HAT from Waveshare enhances the functionality of Raspberry Pi devices by enabling fast and efficient network access, perfect for a variety of use cases in the fields of computing, networking, and IoT.
I bought it off Amazon and never really used it :https://a.co/d/03wRAMpZ