Standard disabling can leave trackers dormant but still present in the system image. The Extended Key allows (e.g., Xiaomi’s MSA, Google’s Firebase Analytics, Huawei’s HiAI). This is “Extra Quality” privacy – no hidden telemetry services can be reactivated by an OTA update.
pm disable-user --user 0 [package.name]
To quantify the value of , I tested on a 3-year-old Xiaomi Poco F3 (6GB RAM, SD870). adb appcontrol extended key extra quality