Yeah, I know - but an antenna embedded within a small box is going to be much less effective than a big old directional Yagi antenna like https://www.satshop.fi/en/4g/4g-5g/4g-antennas.html

Seems weird to cripple the product by not allowing me to (optionally) disable the internal antenna and instead use and tune an external antenna. And I suspect that is likely to make a difference when you are on the edge of coverage, but you know exactly where the relevant cell tower is, a few km away.