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Apple confirms iPhone 18 Pro Max AT&T cellular issues, affected devices require hardware replacement
9to5Mac • • general
Key Points:
- Apple has identified a connectivity issue affecting a small number of iPhone 18 Pro Max users on the AT&T network, causing devices to lose cellular service and be unable to make calls.
- To prevent further occurrences, Apple released iOS 27.0.1 and a carrier settings update, which will automatically download over 14 days or can be manually installed via Settings.
- Devices that have already lost service due to this issue will require a hardware replacement, and affected users are advised to contact Apple Support, AT&T, or visit a retail location.
- The problem is specific to iPhone 18 Pro Max models using Qualcomm modems on AT&T, while iPhone 18 Pro models with Apple’s C2 modem remain unaffected.
- Affected users see "SOS" in the status bar instead of normal connectivity, but the issue does not impact all iPhone 18 Pro Max users on AT&T.
