Apple rolls out iOS 27.0.1 update to prevent the issue
The company has released iOS 27.0.1 along with a carrier settings update aimed at preventing the issue from affecting additional devices. However, these updates cannot restore cellular service on iPhone 18 Pro Max units already affected. The carrier settings update will download automatically over the next 14 days, but users can also check it manually in Settings. In a statement to 9to5Mac, Apple said: “We have identified an issue affecting a small number of iPhone 18 Pro Max users on the AT&T network that may cause a device to lose service and be unable to make calls. We released iOS 27.0.1 earlier this week and strongly encourage all iPhone 18 Pro Max users to update now, and are also issuing a carrier settings update today. These updates together are meant to help prevent this issue from occurring. ” Apple has released iOS 27.0.1 for iPhone 18 Pro Max users and is also issuing a carrier settings update. The company says the two updates are intended to prevent the cellular issue from occurring on additional devices. Apple is encouraging all iPhone 18 Pro Max users to install the software update. The carrier settings update will download automatically over 14 days. Users who want to check for the update manually can open Settings > General > About** on their iPhone.
Apple has confirmed a cellular connectivity issue affecting a “small number” of iPhone 18 Pro Max devices on AT&T. Apple has told 9to5Mac that those devices will require a hardware replacement. The Cupertino-based tech giant noted that this issue can cause users to lose service and become unable to make calls. If the carrier settings update is available, the device can download it from there.
Hardware replacement required for affected devices
Software and carrier updates are intended to prevent the problem, not repair devices that have already lost cellular service. According to Apple, iPhone 18 Pro Max devices that have already been affected and lost service will require a **hardware replacement**. Updating the software or carrier settings will not restore cellular connectivity on those devices. For users who have not experienced the problem, Apple recommends installing iOS 27.0.1 and the carrier settings update to help prevent it.
What iPhone 18 Pro Max users on AT&T need to know
Apple said the issue affects a small number of iPhone 18 Pro Max users connected to the AT&T network. The problem can cause the device to lose cellular service and prevent users from making calls. The confirmed issue specifically involves iPhone 18 Pro Max devices on AT&T. Apple has not indicated that the problem affects other iPhone models or other carrier networks in the information provided. Users whose devices still have cellular service can install the available updates, while those who have already lost service will need a hardware replacement. You use AI every day.
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