Hello, AT&T is my mobile service company for the last ten or eleven years. I bought them many of my formers Android phones and always the upgrades of Android Platform with them is really slow. My now backup phone a Samsung Galaxy S6 64GB was bought at AT&T, I wait and wait for the Marshmallow upgrade and when finally comes all the others mobile companies already got it. I need great signal for my calls, text messages and email and AT&T got the best signal here at Puerto Rico, an island in the Caribbean. Right now a Google Pixel XL 128 GB is my current phone, this phone actual version is 7.1.1, don't know certainly but I think that your phone is going to have Nougat 7.0 when the OTA arrives. Just waiting too for the upgrade for my Galaxy S6. So my friend I hope that you receive the OTA in the next few days.