Apple to Replace iPhone 18 Pro Max Units Affected by AT&T Connectivity Glitch
Apple and AT&T are addressing a cellular connectivity issue affecting a subset of iPhone 18 Pro Max users on the AT&T network. The problem prevents affected devices from making calls, sending texts, or accessing data, including emergency 911 calls. Apple has released iOS 27.0.1 and a new carrier settings update (version 72.1) to prevent the issue from occurring on other devices. However, Apple confirms that software updates will not restore service for phones that have already lost connectivity. Affected users must return their devices for a free hardware replacement. The issue appears isolated to the iPhone 18 Pro Max on AT&T, with no similar reports on T-Mobile or Verizon networks.
Key points
- Apple and AT&T released iOS 27.0.1 and carrier settings update 72.1 on October 2, 2026, to mitigate a cellular connectivity issue.
- The updates are designed to prevent the problem from affecting additional iPhone 18 Pro Max users but do not fix devices that have already lost service.
- Apple confirms that affected iPhone 18 Pro Max units require a hardware replacement, which will be provided free of charge.
- The issue is isolated to the iPhone 18 Pro Max on the AT&T network; T-Mobile and Verizon have not reported similar problems.
- The iPhone 18 Pro Max uses a Qualcomm Snapdragon X80 modem, while the unaffected iPhone 18 Pro uses Apple's C2 modem.
Background
The iPhone 18 Pro Max launched in September 2026 as part of Apple's premium lineup, priced at $1,299. It features a Qualcomm Snapdragon X80 modem, distinct from the Apple C2 modem used in the standard iPhone 18 Pro. The device was introduced alongside the foldable iPhone Duo and followed the discontinuation of the iPhone 17 Pro family.
How outlets are covering it
MacRumors and 9to5Mac report that Apple and AT&T are collaborating on a resolution, with Apple issuing a carrier settings update and mandating iOS 27.0.1 for new setups. PCMag and CNET emphasize that the software updates are preventive and that affected users must seek hardware replacements. CNET notes that the issue is specific to the AT&T network and the Qualcomm modem in the Pro Max, while T-Mobile and Verizon have not reported similar issues. A leaked AT&T email cited by MacRumors suggests iOS 27.0.1 is meant to mitigate future impacts, but users report the update does not resolve existing connectivity failures.
Why it matters
This issue highlights potential hardware or software incompatibilities between Apple's latest flagship and major carriers, potentially affecting consumer confidence in the iPhone 18 Pro Max. The requirement for hardware replacement indicates a more significant underlying problem than a simple software bug, impacting thousands of users and potentially affecting Apple's reputation for reliability.
What to watch
Apple and AT&T will continue to monitor the situation as the carrier settings update rolls out over the next two weeks. Affected users should contact Apple Support or AT&T to arrange for a free hardware replacement. It remains unclear if further software updates, such as iOS 27.0.2, will be necessary to fully resolve the issue.
- AT&T and Apple Just Took Steps Toward Fixing iPhone 18 Pro Max Issue MacRumors
- Apple iPhone 18 Pro Max AT&T Glitch Requires Device Replacements Bloomberg.com
- AT&T Urges iPhone 18 Pro Max Users to Update iOS to Fix Cellular Issues PCMag
- Apple confirms iPhone 18 Pro Max AT&T cellular issues, affected devices require hardware replacement 9to5Mac
- iPhone 18 Pro Max Can’t Make a Call on AT&T? Apple Says It Will Replace It for Free CNET
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