1. Download and Activate sing-box:

   • Download the sing-box app from the Google Play Store.
   • Activate the app if it's not already active.

2. Configure Network Settings:

   • Open the sing-box app and go to the settings.
   • Navigate to the "Test mode" or "Test network" section to configure the network environment.
   • Choose whether to test local or global network, and select the appropriate frequency range (e.g., 2.4 GHz, 2.4 and 5 GHz).

3. Set Up Network Connection:

   • Ensure your mobile device and PC are running compatible Android versions.
   • Verify the device's settings for the network interface.

4. Connect the Device:

   • Connect the mobile device to the network using a strong cable or Wi-Fi.
   • Verify the connection by checking the device's settings.

5. Test Network Connectivity:

   • Open the sing-box app and select test mode.
   • Configure any additional settings if needed, such as password or network name.
   • Connect the device to the network and test connectivity.
   • Check for any errors or inactive device messages, which may require further troubleshooting.

By following these steps, you can successfully test network connectivity for an Android device using the sing-box app.