Apple has confirmed an issue causing a “small number” of iPhone 18 Pro Max devices on AT&T to lose cellular service. Apple released software and carrier updates to prevent the issue from affecting additional users, but the company tells 9to5Mac that devices that have already lost service will require a hardware replacement.
In a statement to 9to5Mac, Apple said: “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. We released iOS 27.0.1 earlier this week and strongly encourage all iPhone 18 Pro Max users to update now, and are also issuing a carrier settings update today. These updates together are meant to help prevent this issue from occurring.”
The software updates will not restore service on devices that have already lost it. Apple says that iPhone 18 Pro Max users who have already lost service will need a hardware replacement. Those users should contact Apple Support or AT&T, or visit an Apple Store or AT&T location. The connectivity issues aren’t impacting every iPhone 18 Pro Max user on AT&T. Interestingly, the iPhone 18 Pro Max uses a Qualcomm modem, while the iPhone 18 Pro, which uses Apple’s C2 modem, is unaffected.
Source: 9to5Mac · Summarized by HeadlinesBriefing