To register for the HABIBMETRO mobile banking application, download the official app from your smartphone's app store, open the platform, and select the "Register" or "Sign Up" option. You will be prompted to enter your registered active mobile number, CNIC details, and account or debit card information. Follow the on-screen authentication steps, verify your identity via a secure One-Time Password (OTP) sent via SMS, and create your custom login credentials and transaction PIN.