The mobile app is available only for the taxpayers and enrolled transporters. It is not available in Play Store. The main user has to login and select the ‘for mobile app’ under registration menu. The system asks to select the user/sub-user and enter the IMEI number of the user. Once it is entered, the concerned user gets the link in his registered mobile to download the app through SMS. Now, the user has to download the app by clicking that link and enable it to get installed on the mobile.