Apple iOS 26.3 Uses C-Series Modem To Limit Carrier Access To Precise Location Data

Apple is preparing to introduce a new privacy feature in iOS 26.3 that reduces how precisely mobile carriers can track user location, enabled by devices equipped with Apple’s C-series modem. Location data has long been considered highly sensitive, and while iPhone users have been able to restrict app access to precise location, carriers have traditionally retained full visibility into detailed connection data. This is set to change with the upcoming update.

Mobile carriers inherently collect information about when and where devices connect to cell towers, allowing highly accurate location tracking. This practice has previously raised legal and regulatory concerns, including a 2020 lawsuit in which carriers were found to have mishandled location data. Apple’s new “limit precise location” feature aims to reduce the usefulness of this information by obscuring exact user positioning at the network level.

According to Apple documentation, the feature will roll out publicly with iOS 26.3, expected in February. Adoption will depend on carrier support, meaning availability may vary by region and expand gradually. At launch, supported carriers include Telekom in Germany; EE and BT in the United Kingdom; Boost Mobile in the United States; and AIS and True in Thailand.

The feature is restricted to devices using Apple’s in-house C-series modem. Currently, compatible products include the iPhone Air, iPhone 16e, and cellular versions of the iPad Pro with M5. Newer iPhone 17 models are not supported, though Apple is expected to expand its custom modem lineup across the iPhone 18 range.

Importantly, limiting precise carrier-level location data does not affect app functionality, navigation services, emergency features, or Find My. Instead, it reduces the granularity of data shared with carriers, such as identifying a general area rather than an exact position.

By lowering the precision of location data retained by carriers, Apple aims to give users greater control over personal information and reduce potential misuse or compelled disclosure. As with other privacy-focused technologies, the feature may face legal and regulatory scrutiny, but it reflects Apple’s continued emphasis on user data protection.

Filed in Apple. Read more about Apple, iOS and Privacy.