Here's how to check if your AT&T iPhone 18 Pro Max is eligible for a free replacement
A serious bug is affecting some iPhone 18 Pro Max models — but if you're not already affected, there are steps you can take to prevent it.
Apple has announced that a limited number of iPhone 18 Pro Max users on AT&T are experiencing an unfixable bug. This issue results in the device losing cellular service and being unable to make calls, texts, or use data. Apple is rolling out an iOS 27.0.1 update and a carrier settings update to prevent this issue from occurring in unaffected phones.
However, the update won't fix the problem for devices already affected. To check if your iPhone 18 Pro Max on AT&T is affected, look for the word 'SOS' in the status bar and notice that you can't use the AT&T network. If you're not on AT&T or using an iPhone 18 Pro Max, you aren't currently at risk. For those affected, the only solution is to replace the phone.
You can contact Apple Support, AT&T, or visit an Apple Store or AT&T branch to receive a free replacement. Ensure you backup your current device before doing so.
Written by urgent.news from TechRadar's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
