FWIW (prob not much) I have a Huawei router in my moho, with a small aerial on the roof, which provides a surprising amount of gain, and the router has an EE sim in, which the dragon tops up regularly from her EE unlimited account.
Works well, and I never seem to be short of a good enough signal for Netflix, YouTube, Prime etc.
Currently sending this from a car park in the middle of nowhere just north of the Austrian border...
I'm sure something similar would work well for you.
FWIW (prob not much) I have a Huawei router in my moho, with a small aerial on the roof, which provides a surprising amount of gain, and the router has an EE sim in, which the dragon tops up regularly from her EE unlimited account.
Works well, and I never seem to be short of a good enough signal for Netflix, YouTube, Prime etc.
Currently sending this from a car park in the middle of nowhere just north of the Austrian border...
I'm sure something similar would work well for you.