Apple says a small number of customers who recently upgraded to the iPhone 18 Pro Max on AT&T experience a cellular service problem after a software bug. The issue causes affected devices to lose cellular connectivity, disrupting phone service.
Multiple outlets report that the problem prevents normal use of calls, texts, and mobile data for impacted users. Bloomberg and NDTV describe the same core impact—loss of cellular service following the upgrade—while Cult of Mac adds that customers may need a replacement device rather than a simple software update.
Apple’s communications, as reflected by the reports, emphasize that the number of affected users is limited. The sources differ mainly in how they frame the remedy: Bloomberg and NDTV focus on the need for replacements after the bug, while NDTV also directs readers toward a “fix,” and Cult of Mac highlights the user-facing consequence of needing a new phone. All reports agree the bug is tied to AT&T service on the iPhone 18 Pro Max.
