Information · On the PS4 log in screen, press Triangle > [Cannot Access Mobile Phone] > [Sign In Using Backup Code]. · Enter one of your 10 Backup Codes - each. Help with 2-Step Verification issues If you cannot receive a 2SV verification text and do not have 2SV backup codes, check to see if you are still signed in on web browser, PS4 and PS App. If you are still signed in, you can. Troubleshooting PlayStation Network 2-Step Verification Issues On the PS4 log in screen, press Triangle > [Cannot Access Mobile Phone] > [Sign In Using.