Ok I just switched to At&t with my Nexus 6p and yes everything works. Except my wearable won't.

Ok long story short I switched to At&t so my Nexus 6p and Lg Urbane lte could use the numbersync option. Only problem is that At&t says it doesn't support HD Voice. I told nexus had all the necessary features to allow it to work. At&t won't enable it from the back end of the system because I didn't get it from them. Is it possible to get the numbersync option to work or should I chunk a perfectly good smartphone.