AT&T and Apple Just Took Steps Toward Fixing iPhone 18 Pro Max Issue

AT&T and Apple are taking action today as they try to resolve iPhone 18 Pro Max cellular issues, according to MacRumors contributor Aaron Perris. Thousands of iPhone 18 Pro Max users have been unable to connect to the AT&T network for phone calls, text messages, and data. The underlying cause has yet to be disclosed, but AT&T and Apple continue to work toward a resolution. First, Apple today released an AT&T carrier settings update (version 72.1, up from 72.0.2) for iPhones. Given the timing of this update, it presumably includes some optimizations related to iPhone 18 Pro Max cellular connectivity, but it is unclear if AT&T has fully resolved the issues or if further tweaks will be necessary. When a carrier settings update is available on your iPhone, you will be prompted to install it. If you dismiss the notification or do not see it, open the Settings app, tap General → About, and the update should appear there. You can see your iPhone's current carrier settings version in the same About menu, next to your carrier's name. Second, Apple today started requiring iPhone 18 Pro Max users to install iOS 27.0.1 in order to set up the device, even though most if not all affected users have said that the update does not resolve the issues. A leaked AT&T email said iOS 27.0.1 is meant to help mitigate future impacts, so it may still help in some way. In a statement shared with MacRumors today, AT&T said it is "working with Apple" on this. Apple did not respond to our request for comment. It is not yet clear if a follow-up update like iOS 27.0.2 will be required as part of a fix, or if the carrier update alone will be sufficient. Popular StoriesHere's When iOS 27 Rolls Out Today in Every Time Zone [Update: It's Out]Sunday September 13, 2026 3:00 am PDT by Eric SlivkaUpdate 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking! Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...iOS 27 Available Now With These 8 New FeaturesMonday September 14, 2026 9:00 am PDT by Joe RossignolUpdate — 10 a.m. Pacific Time: Apple has released iOS 27. During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update. Below, we have highlighted eight new features and...iOS 27 Introduces New 'iPhone Handoff' FeatureWednesday September 2, 2026 12:35 pm PDT by Joe RossignolApple has added a new "iPhone Handoff" feature to iOS 27 that will allow you to switch between two iPhones while using the same phone number on each device. This functionality was briefly mentioned during the WWDC 2026 keynote in June, on a slide that listed hundreds of new features coming in iOS 27 and corresponding software updates, but Apple never shared any further details at the time. ...