A very important thing you forgot and that a lot of people tend to not think about until it bites them in the ass are the available bands. Some of those Xiaomi

A very important thing you forgot and that a lot of people tend to not think about until it bites them in the ass are the available bands. Some of those Xiaomi phones for instance are amazing and cheap and intuitive, but that's not going to help you if it only works with a small subset of the bands used in your country and therefore you get a garbage signal everywhere.