AT&T has a new offer for $1,000 off the iPhone 15 Pro Max when you trade in your current phone and choose an eligible unlimited plan. The discount will be applied as bill credits over 36 months, bringing the monthly cost of the 256GB iPhone 15 Pro Max to about $5.56 (down from $33.34). This might be a deal for those that don't need all the extra features of the upcoming iPhone 16!