Good and I present my opinion from my experience, each dongle or box is focused for one or different brands of mobiles that exist in the market in the world of gsm, now the question for qualcomm eft I do not recommend it at all, simply because it is focused in the samsung brand in depth and somewhat huawei, umt pro for qualcomm if I recommend it and if it improves the server etc, because it would be one of the leaders in the market, then for huawei you can activate its huawei module. You also have Ufi box / dongle that is multibrand and fabulous in any way, it needs to be more constant in updates.
Another thing to keep in mind and that I don't know if people realize, you can have many dongles or box but if you don't have files you can't work and why say if you don't have experience and knowledge, but what I mean for example If you don't have certain files for frp baypass for huawei or where to download firmware for huawei, you can have, all the dongles or software you want that you won't be able to do anything.
BR