AT&T just released the first very good iPhone X deal. And it's simple this time: Buy One Get One Free. Buy/upgrade iPhone X and you can add a line with a FREE iPhone 8. That's a $700 value! The credits come to you, as usual, over 24 months. I detailed the other carrier's launch and trade in offers here.
No DirecTV required. No trade in required. No usual annoying AT&T strings attached. Just add a second line.
AT&T hasn't yet published the official details online but you can get the offer online or in the store. I confirmed the details via chat (see screen shot below). This offer is also available in Costco physical stores.
iPhone X BOGO Link
Expiration date: Unknown
Here's what the Costco deal in warehouse deal (not available online) looks like, so now you can get the same thing directly from AT&T, online or in-store (*the details are not listed online so you can chat to confirm).
No one else is doing this… yet.
In comparison to Verizon, if you bring over a line from another carrier, or trade a phone in, you will get $300 off the iPhone X. It's less than 50% of AT&T's promo but, of course it's different. It's a trade in or bring 1 line over from another carrier. If you switched two lines, you'd have a total of $600 savings, which is close to AT&T's deal.