"Apple" confirms a defect in iPhone 18 Pro Max that requires replacement

Apple confirmed a cellular connectivity defect affecting some iPhone 18 Pro Max units on the US AT&T network. The company stated that phones that have already lost service cannot be fixed via a software update and require physical component replacement. Apple released iOS 27.0.1 and a separate carrier settings update to prevent the issue from worsening on unaffected devices. The iPhone 18 Pro Max model for the US market is the only variant using a Qualcomm cellular modem, while other models use Apple's C2 modem. Apple did not identify the modem as the cause of the problem, and there is no evidence proving Qualcomm components are responsible.