So the main/common GSM network is what we refer to as 2G ?
My cellphone here uses LTE I think, so that means it is 4G ?
The phone my wife wants to buy (Samsung Galaxy J7) specs say:
2G GSM - GSM850, GSM900, DCS1800, PCS1900
3G UMTS - B1(2100), B2(1900), B5(850), B8(900)
4G FDD LTE -...