Will my AT&T iPhone 6 (model A1549) work in Germany and Greece?
I have an AT&T iPhone 6, model A1549, and my understanding, according to Apple's LTE compatibility page, is that the A1586 model is the handset compatible with most European LTE networks. My question is, if I use AT&T's Passport service to receive coverage while traveling through Europe (particularly Germany and Greece, where the carriage partner is Vodafone), will my phone not receive any signal at all, or will it merely drop down to 3G speeds? I can handle not having LTE for a few days, but obviously having no data coverage at all is a dealbreaker. Any knowledge/insights would be deeply appreciated. Thank you.
iPhone 6, iOS 8.4, 128 GB