But i have seen that there is a way to install cusem firmeware on it.
And how i can create the port to make this even possible. Is it really not easy.
Do i have to programm something.

So i would say, that we need UB ports to install Ubuntu on Huawei devices like the Huawei p20.
Because there is no support for this Device.
So how i could make to support the Huawei p20?