Talk:Spain/@comment-95.22.190.43-20160229173420/@comment-26674008-20160301010844

That is odd since the Apple website explicitly says the US T-Mobile model (iPhone 6 Plus A1522 GSM) supports band 20. So, either T-Mobile or Apple is wrong.

I've used that exact model phone in Europe and got wide 4G coverage. So I don't trust T-Mobile in this case. Certainly, even if my phone support only bands 3,7, I still got 4G most everywhere, and the lack of band 20 didn't seem to matter.

Note that you must have a SIM card that supports 4G in order to get any signal (actually, in 4G terminology you need a UICC with 4G support) since Movistar hasn't supported 4G until recently, I would be suspicious the SIM card doesn't support it. Surely they have many 3G only SIM that haven't been sold yet.

If you know for sure the SIM supports 4G, and you're in 4G coverage area, then it's more likely that Movistar simply doesn't think your IMEI is compatible with 4G. You might need to contact them to fix this. This has happened to me with AT&T, and Vodafone in certain countries; they assume devices are 3G only until the IMEI in their database says otherwise. With Vodafone you can usually logon and pick your model phone, which fixes the problem.