How do I uninstall a device administrator app?

Go to SETTINGS->Location and Security-> Device Administrator and deselect the admin which you want to uninstall. Now uninstall the application. If it still says you need to deactivate the application before uninstalling, you may need to Force Stop the application before uninstalling.

How do I remove an administrator from my Android phone?

Go to your phone’s settings and then click on “Security.” You’ll see “Device Administration” as a security category. Click on it to see a list of apps that have been given administrator privileges. Click the app you want to remove and confirm that you want to deactivate administrator privileges.