Talk:Spain/@comment-95.22.190.43-20160229173420/@comment-26674008-20160301015539

Another reason I have doubts of T-Mobile is, even the T-Mobile iPhone 5S supports band 20 (but not band 7), and I got 4G coverage in many places in the EU with that device too. So, it doesn't make any sense that the iPhone 6 doesn't have that support also.

I think it is more likely that T-Mobile doesn't post correct information on this device, and Apple is correct. I've not used Movistar in the past, so I can't help much. But, I think it's possible Movistar doesn't think your device is 4G compatible.