You're not sure that your device is rooted (has root access)? use Basic Root Checker to find out.

Basic Root Checker does *NOT* root your device. It will only show you if your device has root access (or is rooted).

This app *requires* ROOT use it at your own risk.
This app does *NOT* collect any data or personal information.

This app is not endorsed by or affiliated with topjohnwu or libsu