The latest carrier bundle update targets iPhone 18 Pro Max users running iOS 27.2 beta, following reports of network outages affecting calls, messages and mobile data.
Apple has released an emergency carrier settings update for the iPhone 18 Pro Max on AT&T, specifically targeting devices running the iOS 27.2 beta. The new carrier bundle, version 72.0.3, follows earlier updates aimed at addressing connectivity problems reported by some users.
The release comes approximately one week after Apple issued carrier update 72.1 for devices running the stable iOS 27.0 software. However, iPhone 18 Pro Max units operating on the iOS 27.2 beta remained on version 72.0.2 until the latest update became available.
iPhone 18 Pro Max Users Report Network Issues
Some iPhone 18 Pro Max owners using AT&T have experienced serious network connectivity problems. Affected devices have reportedly lost access to cellular services, including phone calls, text messages and mobile data. In some cases, the status bar displays an SOS indicator, suggesting that normal cellular connectivity is unavailable.
The latest carrier bundle update is intended for devices running the iOS 27.2 beta. However, Apple has not provided detailed public information explaining precisely what changes version 72.0.3 introduces or whether it resolves every reported connectivity problem.
Previous Apple Update Did Not Fix Every Device
Apple previously released iOS 27.0.1 alongside a carrier settings update to help prevent additional iPhone 18 Pro Max devices from encountering the network issue.
Despite these measures, devices that had already lost cellular service reportedly required hardware replacement. This indicates that software updates alone were not sufficient to restore connectivity on every affected handset.
Users experiencing the problem may therefore need to contact Apple or their carrier for assistance if installing the latest carrier settings does not restore normal service.
Why the iPhone 18 Pro Max Is Affected
The issue appears to be linked to differences in modem hardware between Apple’s latest Pro models. The iPhone 18 Pro Max uses a Qualcomm modem in the United States, while the smaller iPhone 18 Pro features Apple’s C2 modem.
According to the reported information, the iPhone 18 Pro has not experienced the same network problem. The difference in modem hardware may be relevant to the issue, although Apple has not publicly confirmed its exact cause.
For affected users, the new carrier bundle provides another step in Apple’s response to the connectivity reports. Those running the iOS 27.2 beta on AT&T should check their carrier settings and seek support if cellular service remains unavailable.