User Reports C1X Modem Failure on iPhone Air

By Neev News Desk|Feb 20, 2026, 11:08 ISTUpdated: Feb 20, 2026, 13:09 IST1 min read
User Reports C1X Modem Failure on iPhone Air

A Reddit user has reported that their iPhone Air, which features Apple's C1X modem, has stopped receiving cellular reception. Diagnostics indicated a hardware issue despite no visible damage to the device.

According to a report by NDTV Tech (Gadgets 360), a user on Reddit has raised concerns about a malfunction in the C1X modem of their iPhone Air. The user stated that on Thursday, they discovered their device was unable to connect to cellular networks.

Diagnostics Indicate Hardware Issue

Upon running mobile diagnostics, the user found that the tests suggested a hardware problem. They emphasized that the phone showed no signs of physical damage. The iPhone Air was launched by Apple in September 2025, and it was marketed as the thinnest iPhone model to date. The device is equipped with the C1X modem, which is integral to its cellular connectivity.

This incident highlights potential issues with the modem technology used in the iPhone Air, raising questions among users about the reliability of the device. As of now, further details regarding the extent of the problem or any official response from Apple have not been released.