AT&T Acknowledges iPhone 18 Pro Max Issues: 'Update Immediately'
AT&T has alerted customers that some iPhone 18 Pro Max devices are experiencing cellular connectivity issues and urged them to update to iOS 27.0.1 immediately. Despite the carrier's recommendation, many users report that the software update does not resolve the problem, which prevents calls, texts, and data access. The root cause remains unconfirmed, with speculation linking the issue to the Qualcomm modem used exclusively in the U.S. version of the device.
- ▪AT&T sent text messages to customers advising them to update to iOS 27.0.1 to fix cellular issues on the iPhone 18 Pro Max.
- ▪Affected users are unable to complete calls, send texts, or access data, often causing their devices to enter SOS mode.
- ▪Apple's release notes for iOS 27.0.1 did not mention a fix for AT&T cellular issues, only a Face ID correction.
- ▪The U.S. version of the iPhone 18 Pro Max is the only new model equipped with a Qualcomm cellular modem, unlike other regions and models that use Apple's C2 modem.
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| Original publisher | MacRumors |
| Canonical URL | https://www.macrumors.com/2026/10/01/att-acknowledges-iphone-18-pro-max-issues/ |
| Publication time | Fri, 02 Oct 2026 03:42:52 +0000 |
| Retrieval time | 2026-10-02T03:45:44.128Z |
| Last seen | 2026-10-02T03:45:44.128Z |
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Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
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AT&T Acknowledges iPhone 18 Pro Max Issues: 'Update Immediately'Thursday October 1, 2026 8:42 pm PDT by Joe RossignolIn a text message sent to customers today, AT&T acknowledged that some iPhone 18 Pro Max devices on its network are experiencing cellular issues. AT&T said that customers should immediately update to iOS 27.0.1, despite the fact that many affected users have said that the update does not resolve the issues. There are now at least thousands of users that are experiencing this problem, according to discussion topics across the Apple Support Community, Reddit, and MacRumors Forums. Here is what the text message says: Hi, it's AT&T. Action needed: An important Apple software update for your iPhone 18 Pro Max is available.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at MacRumors.
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