USA phone in UK

[Anonymous]

I will be travelling to the USA at the end of the month and was wondering whether I could purchase a SIM free iPhone 6 over there, bring it back it over to UK and stick my existing SIM card back into it or is it a different GSM band or something?

Might as well get it way way cheaper than what we are being charged here!!

[jonsie]

A lot of dosh which people will happily part with.

[Bambino]

Yes, the faithful won't even blink, but apparently there have been complaints on twitter about the prices.