GoKawiilApple confirms iPhone 18 Pro Max cellular bug on AT&T, offers hardware replacement
Apple confirmed that a small number of iPhone 18 Pro Max devices on AT&T's network are losing cellular service, showing 'SOS' instead of a signal. The company released iOS 27.0.1 and a carrier settings update to prevent the issue from occurring, but says devices that already lost service will need a hardware replacement through Apple Support, AT&T, or in-store visits.
GoKawiil's interpretation of the reporting above, not reported fact.
The fix does not restore service retroactively, meaning affected customers face device swaps rather than a simple software patch, which could strain Apple Store and AT&T support resources. The issue highlights how deeply iPhone hardware and carrier-specific network configurations are intertwined, since Apple needed both a software update and a carrier settings push to address it.
- Only a small, unspecified number of iPhone 18 Pro Max units on AT&T are affected.
- iOS 27.0.1 and a carrier settings update aim to prevent new occurrences but won't fix already-affected devices.
- Users who lost service must get a hardware replacement via Apple or AT&T.
Source: 9to5mac.com — Chance Miller, 2026-10-02
Published there as: “Apple confirms iPhone 18 Pro Max AT&T cellular issues, affected devices require hardware replacement”
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