Registering on the Kotak Mobile Banking App is very simple. 1. Download Kotak Bank app from Google Play Store/Apple App Store/Windows Store/Blackberry World on your smartphone 2. Login with your Customer Relationship Number (CRN). You can find your CRN from your Debit/Credit card. 3. Authenticate using your Debit/Credit Card details or Net Banking password 4. Set a 6-digit MPIN 5. Enter the activation code sent to your registered mobile number to complete the registration process and experience the convenience of mobile banking on your mobile phone with ease.