There are now patches to apply if you don't have any problems making calls on an AT&T iPhone 18 Pro Max. If you do, you need to get your phone replaced.
Since launch, iPhone 18 Pro Max models have been dropping off the AT&T network. In some cases, never to return.
After an OS update earlier in the week, and a carrier settings update on Friday, the problem may no longer manifest for those who haven't seen it. But, that doesn't help if your iPhone has issues already.
In a statement to our friends over at 9to5Mac and other venues, Apple has given instructions on what to do, and where to do it.
Furthermore, Apple also says that already-impacted devices need to be replaced. The best way to do this is at an Apple Store, but some AT&T corporate stores may have stock for replacement as well.
AT&T says the carrier settings update will auto-populate in the next two weeks. However, we don't recommend waiting.
Neither the carrier settings update nor the iOS 27.0.1 update will fix a device that's had the problem already.
If you are affected by the iPhone 18 Pro Max call problem, or any other issue on AT&T, be certain to contact support for both the carrier and Apple. AT&T has a device help center, and Apple has a general support page.
