Just a few weeks ago we reported that Sony would be releasing the Xperia Z5 here in the states on February 7th, albeit without the fingerprint sensor. Now today, we have information indicating exactly what version of the device Sony will be launching stateside, the E6603 variant.
This model includes most of the bands required to work on the AT&T and T-Mobile networks. The only small issue that may arise is for those of you on the T-Mobile network. This model lacks the band necessary to run 3G on the 1700MHz frequency, which is not really an issue because that spectrum is being rerouted over to LTE anyway.
One downside to this US variant is that it only supports LTE Cat 4 speeds, limiting download speeds to 150 Mbps. The international variant, the E6653, supports LTE Cat 6, allowing for download speeds up to 300 Mbps. If having that extra download speed is an absolute must for you, according to the Xperia Blog’s Z5 buying guide, the E6653 variant is capable of connecting to AT&T and T-Mobile’s networks, just like the E6603, so that may be the move for you.
Source: Xperia Blog