1. No system signature is added
If you have not added the system signature, find the following codes at the header of the AndroidManifest.xml file and delete it:
android:sharedUserId="android.uid.system"
2. Added system signature
- Check whether there is any problem with the system signature itself or the joining method?
- If there is no problem with the system signature, there should already be an APK in the system, and the current APK should be added to the system uid. At this time, you should first delete the APK that exists in the system, and then reboot.
adb root
adb uninstall com.xxx.xxxx
adb rebootRead More:
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