New T-Mobile subscriber here. Last night my Verizon FiOS connection went out (a node in the area apparently went down) so I fired up personal hotspot on my iPhone, and connected my Apple TV to the phones hotspot. From there, I was able to AirPlay and stream content directly from the iPhone HBO GO app. On 9.3b2, you're also finally able to exit the app you're AirPlayimg from, and switch over to Safari for example. I vaguely remember not being able to do this for a while, but that's getting OT. The speed and quality over AirPlay from the personal hotspot to my aTV were both surprisingly great! The average signal inside my apartment is around -105 which is two or so bars of LTE. If I turn off LTE and force 4G, the signal improves drastically, to around -75, five bars. On LTE or even on 4G, when AirPlaying anything from the HBO Go app on my phone, to a 50" TV, the quality is almost indiscernible from what my normal Verizon FiOS connection produces. I am VERY impressed with this! Here's the best part: Because HBO Go is a part of BINGE ON! guess what? The data used to AirPlay from the HBO app on my phone, to my aTV is not being counted as personal hotspot data. It's not being counted as using ANY data at all. And it really looks great! Initially, I had connected the aTV to my hotspot, and then started streaming HBO Go directly from the aTV app instead of using AirPlay on the phone, but I noticed that around 60min of content was using around 500MB-1GB of personal hotspot data. I didn't realize that T-Mo likely cannot tell that you're using the service through the hotspot - or maybe it was designed that way. Who knows. Anyway, it seems like AirPlay from your phone is a nice little workaround to NOT burn through your hotspot cap...and every single one of the supported services have an iPhone app with AirPlay capability. Now I'm swriously questioning whether or not I need to keep paying Verizon $55/mo th for FiOS. Attached a few photos taken with an Air2 in low lighting. Honestly, the picture quality is quite remarkable. Photos don't do justice.