Review on Hotspot Module: USB Wireless Multi-Mode Hotspot Expansion Board + Antenna + LED Screen + Case for Raspberry Pi 3/0W(A), Supporting D-Star/P25 Digital Mobile Radio UHF VHF by Andre Bennett

If you're not very good at soldering, buy a pre-assembled kit for a few bucks more. ADDITIVE. After struggling with this for almost 2 months I gave it to a friend who builds it all the time and was told the reason I can't get mine to work is that it's defective. He told me he had a bad match too. I think they don't test them thoroughly before selling them. I suspect if the header pins aren't even soldered then they can't test them.