Does NOT require new line. Offer won't show in account but you can chat in. (YMMV?)
As per my chat rep:
Value: Get $579.99 off the latest iPhone 12, iPhone 12 mini, iPhone 12 Pro, iPhone 12 Pro Max smartphone for customers that trade in and upgrade to an eligible device. Must trade in an eligible device and upgrade to any iPhone 12 with device payment via recurring BIC over 24 months (including 30 months for iPhone 12 Pro or iPhone 12 Pro Max).
Juan at 21:30, Jan 6:
Trade in of iPhone 4 and above ($579.99 recurring BIC)
Juan at 21:30, Jan 6:
Requirements: Must trade In an eligible device and upgrade to any iPhone 12 smartphone on device payment to receive credit. Cannot be combined with other equipment discounts.
The Trade In value of $579.99 can be used to upgrade to an iPhone 12 mini for $5/month; iPhone 12 for as low as $9.17/month; iPhone 12 Pro for as low as $17.50/month, and iPhone 12 Pro Max for as low as $21.67/month.
There is no expiration date meaning it's bound to expire any day.
Juan at 21:32, Jan 6: