Apple confirms iPhone 18 Pro Max network bug affecting AT&T users
Apple has acknowledged a bug affecting a small number of iPhone 18 Pro Max users on AT&T's network, causing devices to display an 'SOS' symbol and lose calls, texts, and data service. The company says iOS 27.0.1, released earlier this week, along with a new carrier settings update, should help prevent the issue, though it hasn't fixed phones already affected.
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The iPhone 18 Pro Max is notable as the only US model using a Qualcomm modem rather than Apple's own chip, which raises questions about whether that hardware difference contributes to the bug, though Apple hasn't confirmed any link. For affected users whose phones have already lost signal, a software fix won't help, meaning some may need a replacement device from Apple or AT&T.
- Apple confirms a bug causing some iPhone 18 Pro Max units on AT&T to lose cellular service entirely.
- iOS 27.0.1 and a new carrier settings update are meant to prevent the issue, but won't fix devices already affected.
- The iPhone 18 Pro Max's unique use of a Qualcomm modem raises unconfirmed questions about a possible connection to the bug.
Apple iPhone 18 Pro Max — If you're in the market for Apple's latest flagship, the iPhone 18 Pro Max is still a standout device despite this software hiccup, which Apple is actively patching via iOS updates. It's a great pick for anyone wanting the newest camera and performance upgrades, and these connectivity issues are quickly being resolved with carrier settings updates.
See Apple iPhone 18 Pro Max on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: engadget.com — Filipe Espósito, 2026-10-03
Published there as: “Apple acknowledges AT&T network bug on iPhone 18 Pro Max”
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