it might be worth considering that for many Phones different hardware is sold _under the same marketing name_.

The most common versions (in the "west) are AFIK:

- US version vs. international version

(just the most common divide of Phones you will see "in the west", e.g. if a brand sell to China, that also is normally it's own sub-versions.)

the most common differences include:

- different modems

- US phones being carrier locked (which is not normal outside of the US and a few other countries)

- US phones not having sim card slots, the international version of the same (Android) Phones, often still has a physical sim card slot