Fine print says Port In only (i.e. Switching a number from another carrier)
FREE IPHONE 7 32GB OFFER: Limited time (ends September 30, 2016, in Puerto Rico). Void in Connecticut, Rhode Island, and Miami-Dade. Port-in: From eligible carriers (excludes Cricket and select others) only. Must buy eligible device within 7 days of port. Eligible Device: New iPhone 7 and 7 Plus on 0% APR AT&T Next (30-month) or AT&T Next Every Year (24-month) installment agreement. Retail price is divided into monthly installments. Tax on full retail price due at sale. After all credits, get iPhone 7 32GB priced $650 ($21.67 or $27.09 per month) for free. May apply max credit towards other eligible devices priced up to $970, which will be discounted but not free. Wireless: Monthly postpaid voice and data required (existing customers can add to eligible current plans). DIRECTV: Excludes streaming only services. If new customer, 24-month agreement required. Must be installed within 30 days of device activation. Bill Credit: Credit applied in equal amounts towards installment payments over entire agreement term. Both services must remain active and in good standing and device must remain on its agreement for entire term to get all its credits (if you cancel wireless service, you will owe remaining installment balance of up to $970). If upgrade or pay up/off agreement early, your credits may cease. Offer Limits: 1 per wireless account; 2 wireless accounts per TV account. Return: Restocking fee up to $45 may apply. See store or att.com/TVAppleoffer for offer details.
Again...that's a different offer. Here are the terms for the one being discussed here:
FREE IPHONE 7 32 GB OFFER: Ltd time (ends 9/30/16 in Puerto Rico). Select stores & online. Not an AT&T Next upgrade offer. Void in CT, RI, Miami-Dade. Elig. iPhone 7: New iPhone 7 or 7 Plus on 0% APR AT&T Next (30-mo.) or AT&T Next Every Year (24-mo.) installment agmt. Retail price is divided into monthly installments. Tax on full retail price due at sale. After all credits, get iPhone 7 32GB priced $650 ($21.67 or $27.09/mo.) for free. May apply max credit towards other eligible iPhones priced up to $970, which will be discounted but not free. Wireless: Monthly postpaid voice & data req’d (existing customers can add to elig. current plans). Elig. Trade-in: Must use the AT&T trade-in program in an eligible store or online. Must trade-in an iPhone 6, 6 Plus, 6s, 6s Plus in good working condition that is fully-paid off. In some stores will need to trade-in and make new purchase in same transaction. If your iPhone is being shipped, you will receive an email with instructions on how to complete your promo trade-in. Must complete trade-in w/in 30 days of new iPhone activation. Bill Credit: Must have completed trade-in for credits to start. Credits applied in equal amounts towards installment pymts over entire agmt term. Svc must remain active & in good standing and device must remain on its agmt for entire term to get all credits (if cancel svc you will owe remaining installment balance of up to $970). If upgrade or pay up/off agmt early your credits may cease. Offer Limits: Not combinable with bill credit, switcher, or other discounts on the iPhone offers. Return:Restocking fee up to $45 may apply.
GEN. WIRELESS SERVICE: Subj. to Wireless Customer Agmt (att.com/wca). Deposit: may apply. Device Limits: Purch. limits apply. Credit approval, taxes, activation/upgrade (up to $20) fees, monthly, other charges, usage, speed, coverage & other restrs apply. Promotion, terms, & restr’s subject to change & may be modified or terminated at any time without notice.