Apple is replacing some iPhone 18 Pro Max units after owners on AT&T lost cellular service, according to an Apple statement. Affected phones cannot make calls, use mobile data, or send texts.
Apple has released a carrier settings update and
iOS 27.0.1 to stop more devices from running into the problem, but phones that have already lost service need a replacement from Apple or AT&T.
"We have identified an issue affecting a small number of iPhone 18 Pro Max users on the AT&T network that may cause a device to lose service and be unable to make calls," an Apple spokesperson said in a statement.
Customer reports describe the problem only on the iPhone 18 Pro Max on AT&T, and Apple says it has seen the same pattern. AT&T has confirmed to customers that the issue is known and under investigation together with Apple.
Apple has not disclosed the number of affected devices or why a replacement is the only fix for phones that have already dropped off the network.
