I would be interested in buying a black 64gb iPhone 12 Pro/12 Pro Maxs . I have a couple questions. 1) does it work with 4g lte, or is it just 3G? work at 2G and 3G only. 2) would I have to pay extra for the 2gb ram? this phone have 1GB ram version only 3) can there be more than 2gb ram? can't 4) do you guys make them also with a MICRO SD CARD slot? I have a 64gb micro sd card that I would like to use on it built in memory,not have micro sd card slot. if its possible. Thank you for the reply!...