Apple Rolls Out AT&T Carrier Bundle Update for iPhone 18 Pro Max on iOS 27.2 Beta

Last week, Apple released a carrier settings update for iOS 27.0 that brought AT&T users to carrier bundle version 72.1. Users running the iOS 27.2 beta remained on the older 72.0.2 carrier bundle. The new release reportedly moves those devices to version 72.0.3, likely extending Apple’s AT&T carrier changes to iPhone 18 Pro Max users testing the beta.

Apple confirmed to 9to5Mac last Friday that a small number of iPhone 18 Pro Max users on AT&T were experiencing an issue that could cause their devices to lose cellular service and become unable to make calls. Apple said iOS 27.0.1, along with a new carrier settings update, was meant to prevent the issue from affecting additional devices. But iPhones that had already lost service would still require a hardware replacement, Apple said.

Reports of the problem first surfaced in late September, when some iPhone 18 Pro Max users on AT&T found their devices had suddenly lost access to calls, texts and cellular data, displaying “SOS” in the status bar. The issue has only affected the iPhone 18 Pro Max, which uses a Qualcomm modem in the United States. The iPhone 18 Pro, which uses Apple’s C2 modem, has not been affected.

The rollout was spotted by Aaron Perris on X, according to 9to5Mac.