Apple says some iPhone 18 Pro Max units on AT&T need replacing after cellular failures
Apple has acknowledged that some iPhone 18 Pro Max owners on AT&T have lost cellular service, which blocks calls, texts and mobile data. MacRumors reports that thousands of owners described the problem on Apple's Support Community and elsewhere.
In a statement, Apple said the issue affects "a small number" of iPhone 18 Pro Max users on the AT&T network. It said iOS 27.0.1 and an AT&T carrier settings update are intended to prevent it from happening in the first place.
For phones already affected, a software fix does not work. Apple says they must be replaced. Owners can contact Apple Support or AT&T, or visit an Apple Store or AT&T location. MacRumors says Apple Stores appear likely to replace affected units at no charge.