To prevent dfndr vault from being uninstalled from your device:
- Open the app and select the “Menu” in the top left corner.
- Tap “Settings”, and then “Prevent Uninstall”
- On the next screen, tap “Grant Permission”
- On the next Accessibility Permissions screen, activate the app as admin.
Now dfndr vault cannot be uninstalled.
To disable this feature, toggle the switch under “Prevent Uninstall” to the left.