Once the iMobile application is downloaded, follow these steps to activate iMobile Open and install the application Verify the mobile number and select the Login option from. 1  Login PIN. 2  Set a 4-digit Login PIN of your choice.3  This PIN will be required each time you login to iMobile application.tep 1: Download iMobile. Visit the Google Play store or Apple app store to download the new iMobile. Alternatively, SMS iMobile to 5676766 to get the download link or Visit http://mobile.icicibank.com/dl from your mobile browser.