Also T-Mobile plans on rolling out 700MHz LTE later this year, would this be compatible?
The developer edition is an "AT&T variant" which restricts some bands, meaning I drop down to EDGE in some areas where T-Mobile hasn't refarmed(modernized) their spectrum.
>As far as I can tell only the AT&T and Google Play Edition SKUs support carrier aggregation. The two SKUs are quite similar from a cellular standpoint, with the AT&T model locking out UMTS band 4 to discourage movement to T-Mobile.
also, could I get wi-fi calling if I found and flashed a T-Mobile stock rom?