Apple acknowledges connectivity issues on some AT&T iPhone 18 Pro Max models

Apple and AT&T have confirmed that a small number of iPhone 18 Pro Max smartphones on the AT&T network are experiencing cellular connectivity failures. Android Authority and MacRumors both report that Apple has acknowledged the issue after affected customers reported losing service entirely or having their devices stuck in SOS mode upon opening the box. [2][3][4]

According to reports from MacRumors, Tom's Guide, and Lifehacker, affected users must receive a hardware replacement because the issue cannot be resolved through a software update once it occurs. Android Authority reported that Apple has released a bug-fixing software update to prevent additional units from encountering the problem. [2][3][4][7]

Tom's Guide reported that affected owners must visit an Apple Store or an AT&T retail location to receive a replacement device. MacRumors and Android Authority both noted that Apple and AT&T have not yet provided specific technical details explaining what caused the cellular failure. [2][3][4]

The iPhone line consists of smartphones developed by Apple that have been released annually since 2007. GSM Arena noted that the flagship iPhone 18 Pro Max recently launched alongside updates to screen features, performance, cameras, and battery life over the previous generation. [1][11]