First download the Mobi Passport App from Google Play or App App Store.
To use the Mobi Passport App, you will need to request you username and password which will be sent to you via SMS. First at the App Login Page click the button "FIRST TIME LOGIN HELP". You will the be prompted to enter your mobile phone number. Enter the USA number assigned to your SIM with the leading 1. For example if your USA number is (+1) 123 456 7890 enter 11234567890.