Apple and AT&T Address iPhone 18 Pro Max Cellular Issues
Apple and AT&T have acknowledged and are working to resolve cellular connectivity issues affecting a small number of iPhone 18 Pro Max users on the AT&T network. The problem, first reported in mid-September, causes affected devices to lose service and be unable to make calls, send texts, or access data. While Apple has released iOS 27.0.1 and an AT&T carrier settings update to prevent the issue, devices that have already lost service will require a hardware replacement.24 sourcesSee all sources