Yep, good point: none of them list it in the specs.
I think what this comes down to is that AT&T have gone out of their way time and time again to take things away from the consumer for a higher profit margin. I switched to T-Mobile despite getting somewhat lousy coverage at work because I liked what they were doing in the industry. AT&T, on the other hand, has taken away mobile hotspot from the 3gb tablet plan, disabled hotspot tethering on the iPad, taken away headphones out of every phone they sell, removed wireless charging from the Lumia 1520, cut the storage in half on their 1520, and the list goes on and on. I know this is off topic, but I felt the need to say why I would go way out of my way to purchase a non-AT&T branded phone. I 100% blame AT&T and not Nokia on this, though I wish Nokia would grow a pair and act more like Apple in not letting carriers bully them.
-Collin-