https://www.pcmag.com/news/37071 ... rsions-of-iphone-11The US models have frequency bands 14 and 71, used by AT&T and T-Mobile. They also have CDMA modems needed for rural voice coverage on Sprint and Verizon's older 2G/3G networks. They do not have LTE bands 11, 21, 28, or 32. Especially in Europe, the US models will get poorer coverage and speeds than the world models will.
Band 28 is a?globally popular, low-frequency coverage band used in Australia, Latin America, Europe and Asia. Band 32 is a supplementary speed band used in Europe. Bands 11 and 21 are used exclusively in Japan.
The "rest of world" models, on the other hand, if used in the US, would have limited LTE speed on AT&T (because of band 14) and less rural LTE coverage on T-Mobile (because of band 71). They would also have less rural voice coverage on Sprint and Verizon, because the "rest of world" models lack the CDMA modems that Sprint and Verizon's older 2G/3G networks use. (You can tell this by flipping between the US and UK product pages.)
The Chinese models have the same band layout as the US models, but have two physical nano-SIM slots rather than one nano-SIM and one eSIM.?From a hardware perspective, they should work in the same countries as the US models.?I'm not sure what else may be different about them—Chinese phones?also often have special firmware to do things like delete the Taiwanese flag emoji, so they may behave unpredictably if used with a non-Chinese primary SIM card.
