Let's think diabolical style.Probably not formally banned but will "convince" them to not use behind the screen.
Sometimes we need to, for more clear view.
Japan did have a ban on Huawei. (Stories from 2018, 2019)
Japan just stabbed America in the back.
Japan was going to be a big part of building equipment for 5G to make America and its allies number #1 in 5G, but Japan had other ideas and sided with China, effectively taking itself out from the American side to the Chinese side.
This was brutal, unprovoked, and ruthless. But, usually most back stabbings are like that. Oh well, what can you do, other than have eyes in the back of your head.
Japan will not ban Huawei. Ergo, they are on China's side. No one in Asia has banned Huawei from 5G.
What do the United States think of that, and what will they do next, is up to them.