Apple Says iPhone 18 Pro Max Users With AT&T Cellular Issue Need to Have Device Replaced

Apple has confirmed that a specific cellular connectivity issue affecting iPhone 18 Pro Max users on the AT&T network requires hardware replacement. While software updates have been released to prevent further occurrences, affected devices cannot be repaired via software.
Why it matters
This highlights the limitations of software-based fixes for hardware-level defects and the logistical challenges of large-scale product recalls or replacements.
Apple today confirmed that a "small number" of iPhone 18 Pro Max users on the AT&T network have experienced an issue that causes the device to lose cellular service, thereby preventing phone calls, text messages, and data from working. Thousands of users complained about the issue across the Apple Support Community and other platforms.
Apple said it released iOS 27.0.1 earlier this week and an AT&T carrier settings update earlier today to help prevent more iPhone 18 Pro Max users from being impacted by this issue going forward. In a statement shared with MacRumors , Apple strongly encouraged all iPhone 18 Pro Max users to update to iOS 27.0.1 now. To install the update, open the Settings app on your iPhone and tap on General → Software Update.
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11 other newsrooms covered this event. We read each version separately.
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