I think the "we aim" bit is more directed towards certain frequencies rather than "we're not sure if we can get 4G working". Take a look at any group of phones

I think the "we aim" bit is more directed towards certain frequencies rather than "we're not sure if we can get 4G working". Take a look at any group of phones on https://willmyphonework.net https://willmyphonework.net and look at the differences between countries. Getting 3G/4G to work globally is a lot harder than just settling for US/Canada or US/Europe.