Here is a neat accessory that turns your Raspberry Pi 5G capable. The SIM8200EA-M2 5G HAT is powered by a Qualcomm Snapdragon X5 processor and has a 40PIN GPIO extension header. It comes with a USB 3.1 port for testing. It also has 2 LED indicators.
The SIM card slot supports 1.8V / 3V SIM cards. The unit has an acrylic case and cooling fan.