Cause: Android permissions changed in later OS versions. Fix: Reboot the device. If that fails, factory reset and try again. Version 206 works best on Android 9 or 10.
Checksum Verification: Once you download the APK, verify its SHA-256 hash against known good values (check the official Test DPC GitHub repository for release tags).
Despite its age, the Test DPC 206 APK packs a robust feature set: