Create a New Email Account
Create a new Gmail (or any other email provider) account.

Set Up a Sandbox Account
Use this new email address to create a Sandbox account.

Sign Out of Your Current iOS Account (if necessary)
If your iOS device is currently signed in with a different Apple ID, sign out before proceeding.

Sign In with Your Sandbox Email
Sign in to your iOS device using the newly created Sandbox email account.

Verify Sandbox Login
Make sure you are also signed in to the Sandbox environment using the same email and password.

Add a Test Payment Method
You should now be able to successfully add a test credit card to your device’s Wallet for Sandbox testing.

Resources

• Apple: Sandbox Testing
  • See the Adding a Test Card Number section, and
  • Test Cards for Apps and the Web