Do you known what is the cell phone that actually are performing UL 2CC CA?
We have trisled S20 without success.
Preferentially, no Huawei phones.
Some of UEs are supporting but Intra band, very few UEs are supporting inter Band UL CA.
I see very very few UE supporting: UL CA or UL MIMO.
Huawei test with CPE.
One plus 9 pro works.
What about Samsung S21?
You can find the answer on cacombos.com.
This is a Huawei CP, UL 3+1:
This is S20, not see UL band1 + band2: