Mine was activated in the Apple store even though I chose to unbox it at home. I know this is because my S5 became unusable the moment I paid for the phone.
Yeah once the 6 tries to activate, it automatically turns off your other phone. Same thing happened to me kind of.
I got my phone at 9AM CST this morning. Swapped my SIM chip and fired the phone right up. No issues at all and it working great!
This is going to sound like a total noob question so bear with me but the AT&T SIM card was already in the phone, right? I got my new 6 today from apple. I've had iPhones before but I've never had one shipped to me, always activated in stores. I just turned my 6 on this afternoon, it loaded up, I confirmed all the important account info and I was good to go. My data, calls, and voicemail seem to be working fine. My previous iphone 5S is saying "no service". I guess I'm just waiting for the change to screw this up. Lol
I got my phone at 9AM CST this morning. Swapped my SIM chip and fired the phone right up. No issues at all and it working great!
I did the same thing and everything seems to work fine. I am using ATT Next as well.