First you need to have Application installed in your mobile and needs to have minimum balance.

Follow the steps:
1. Install the application.
2. Launch the application.
3. Enter your mobile number and tap on “OK” button.
4. Verification process will be completed in 10-15 secs of 10 minutes total time.
5. Your mobile will get register with your own SIM(mobile) number.

Suppose if the application was uninstalled, you can again install and register with the previous number.
The process will be same as the above.