In the unlikely event that Huawei didn't think it was dangerous to rely on US technology for its smartphones, the latest Trump administration trade blacklisting should dispel all doubts about that for the Chinese tech giant.

The United States really is serious about keeping Huawei out of telcos, and not just their future 5G networks. Now it's adios Google apps for owners of the popular Chinese smartphones.

What will happen next for owners of Huawei devices who use Google services - and that'll be just about every single one who has bought a Huawei phone - is not clear.