I'm surprised that people don't know the patent landscape. The US may be leading 5G patents in total numbers, probably by multinational corps. But 8 out of 10 top university contributions come from China and Huawei is the largest single company contributor in 5G research. Qualcomm wouldn't make an agreement with Huawei if they didn't need to.
To the people that say "why can't Huawei make a 5G phone". Huawei was manufacturing their chips with 5G modems at TSMC until the US went after them trying to turn them into HTC or Alstom Energy, but it failed. It's one of the reasons why Taiwan now has zero leverage as the US has been hollowing them out since the last administration. But Huawei have been building their own domestically produced modems for a few years now.
I used to attend the communication network meetups with all the professors in Germany and mI think all of them agree that all that energy sanctioning China should have been spent on actual competition domestically in the West.
Huawei gets a lot of research output from its many Canadian Research and Development centres