Apple Confirms Free Replacements for iPhone 18 Pro Max Units Losing AT&T Service

Key points

• Apple confirmed that a small number of iPhone 18 Pro Max users on AT&T are experiencing total loss of cellular service, including calls, texts, and data.
• iOS 27.0.1 and a carrier settings update are intended to prevent the issue but will not fix devices that have already lost service.
• Affected users must return their phones for a free replacement via Apple Support, AT&T, or an Apple Store.
• The issue is limited to the iPhone 18 Pro Max; the iPhone 18 Pro and other carriers (Verizon, T-Mobile) are not reporting similar problems.
• The iPhone 18 Pro Max uses a Qualcomm Snapdragon X80 modem, while the standard Pro uses Apple's C2 modem, a key difference noted by analysts.

Background

The iPhone 18 Pro Max launched in September 2026 at a starting price of $1,299. It is the first model in the US to feature a Qualcomm Snapdragon X80 modem, as Apple has been transitioning away from third-party modems for its standard Pro models. The iPhone 18 Pro, which uses Apple's proprietary C2 modem, is not affected by the current AT&T connectivity issues.

How outlets are covering it

PCMag and 9to5Mac report that Apple has confirmed the issue and that affected devices require hardware replacement. CNET emphasizes that Apple will replace the phones for free and notes that the issue is isolated to the Pro Max model, which uses a Qualcomm modem, while the Pro model with Apple's C2 modem is unaffected. AppleInsider highlights that the software updates will not fix already-affected devices and advises users to force the carrier settings update. All sources agree that the issue is limited to a small number of AT&T users and that the updates are preventive rather than corrective for those already affected.

Why it matters

This issue highlights potential hardware or software compatibility problems between Apple's new iPhone 18 Pro Max and AT&T's network. It also underscores the importance of modem technology, as the issue is isolated to the Qualcomm modem in the Pro Max, while Apple's C2 modem in the standard Pro is unaffected. This could have implications for Apple's future modem strategy and consumer confidence in its hardware.

What to watch

Apple and AT&T are rolling out carrier settings updates over the next two weeks. Affected users should contact Apple or AT&T support to arrange a free replacement. Apple is expected to provide more details on the root cause of the issue in the coming days.