Optimistic AT&T tells iPhone 18 Pro Max iOS 27.0.1 update will fix call problems

AT&T has texted customers on iPhone 18 Pro Max, telling them to upgrade to iOS 27.0.1 to fix cellular issues. Users are saying this update doesn't address their problems.
AT&T has reportedly told iPhone 18 Pro Max users to update iOS - image credit: AT&T.
The key problem, believed to affect only a small number of users, is that the iPhone 18 Pro Max on AT&T may not make or receive calls, nor always send and receive text messages. AT&T has now texted customers telling them to