Apple to replace iPhone 18 Pro Max units with AT&T cellular defects

Key points

• Apple confirmed that some iPhone 18 Pro Max units on AT&T cannot make calls, send texts, or access data, displaying 'SOS' in the status bar.
• Affected users must return their devices for a free hardware replacement, as software updates do not restore service to already impacted phones.
• Apple released iOS 27.0.1 and a carrier settings update to prevent the issue from occurring on other devices.
• The problem is isolated to the iPhone 18 Pro Max on AT&T; the iPhone 18 Pro and devices on Verizon or T-Mobile are unaffected.
• The issue may be linked to the Qualcomm Snapdragon X80 modem used in US iPhone 18 Pro Max units, unlike the Apple C2 modem in other models.

Background

The iPhone 18 Pro Max launched in September 2026 at a price of $1,299, replacing the iPhone 17 Pro Max. Apple has historically offered repairs for hardware defects, such as the 2021 iPhone 12 receiver issue and the 2024 iPhone 14 Plus camera preview bug, but this is the first time Apple has offered replacements for a connectivity issue. The iPhone Duo, a foldable model priced at $1,999, is scheduled to ship on October 23.

How outlets are covering it

PhoneArena and 9to5Mac emphasize the hardware replacement process and the distinction between the affected Pro Max and the unaffected Pro model. Macworld notes that some replacement phones may still experience issues if the carrier settings update is not applied, suggesting users wait for the update to roll out. PYMNTS highlights the financial impact on Apple and the broader context of Apple's AI strategy, while Bloomberg reports that the issue affects a 'small number' of users. All sources agree that the problem is isolated to AT&T and the Pro Max model, but they differ on the certainty of the fix, with Macworld cautioning that the carrier update is still rolling out.

Why it matters

This is the largest iPhone connectivity issue since the 2010 'Antennagate' incident, affecting Apple's most expensive non-foldable smartphone. It raises questions about the reliability of Apple's hardware and software integration, particularly with the Qualcomm modem, and could impact consumer confidence in the iPhone 18 Pro Max. The issue also highlights the importance of carrier-specific updates and the need for Apple to address hardware defects promptly.

What to watch

Apple and AT&T are expected to announce an official service program for the replacements. The carrier settings update will roll out over the next 14 days, and users are advised to install iOS 27.0.1 and the carrier update to prevent the issue. Apple may also investigate the root cause of the problem, potentially involving the Qualcomm modem, and could issue further updates or replacements if the issue persists.