I have a doubt about USB type declared by smartphone manufacturer. Some smartphone declares USB Type C 3.2, for example Galaxy S20 Ultra.
The new Xiaomi Mi 10 Pro is declared as USB 2.0 on Type C.
I try to check the real connection, and when I connect to my Mac the Samsung I have 480 Mb/s negotiation. Looks like even if Samsung declare USB Type C 3.2 the max data transfer is 480 Mb/s, and I can prove it with a benchmark.
I connect the Xiaomi, the same. The Huawei P30 Pro, the same. Is not the cable: I use a very good cable and when I connect my Oculus Quest to the same port, the connection is negotiated at 5 Gb/s.
So my question: why a lot of smartphone manufacturer declare USB 3.2 port but the data transfer is capped to 480 Mb/s?