Setting NSLocationDefaultAccuracyReduced = true appears to prevent CLLocationManager.requestAlwaysAuthorization() from presenting the upgrade prompt after When In Use authorization has been granted. Repro https://github.com/Wenszel/core-location-always-repro Set NSLocationDefaultAccuracyReduced = true Start from a fresh location authorization state Call requestWhenInUseAuthorization() and choose Allow While Using App Call requestAlwaysAuthorization() Expected: The Always authorization upgrade prompt is presented. Actual: No prompt is presented Without NSLocationDefaultAccuracyReduced, the upgrade prompt is presented as expected. Additional case After granting When In Use, enable Precise Location in Settings and then call requestAlwaysAuthorization(). The upgrade prompt still does not appear, suggesting the issue is tied to NSLocationDefaultAccuracyReduced rather than the current CLAccuracyAuthorization. Environment iPhone 14 Pro, iOS 26.6.1 Also reproduced on iOS 26.4 Simulator