If you lost access to your primary phone or can't receive SMS verification codes, you can use a pre-generated 8-digit backup code to log into your Google Account and update your 2-Step Verification phone number.

Part 1: How to Log In Using an 8-Digit Backup Code

When prompted for 2-Step Verification during login, follow these steps to use one of your saved 8-digit backup codes:

1. Go to the Google Login screen and enter your email address and password as usual.
2. When the 2-Step Verification screen appears, click on "Try another way" at the bottom of the prompt.
3. From the list of available options, select "Enter one of your 8-digit backup codes".
4. Enter one unused 8-digit backup code into the text field and click Next.

Part 2: Update or Change Your 2-Step Verification Phone Number

Once signed into your account using your backup code, update your phone number to restore normal 2-Step Verification access:

1. Open your Google Account Settings.
2. From the left-hand navigation panel, click on Security.
3. Under the "How you sign in to Google" section, click on 2-Step Verification (or 2-Step Verification Phones).
4. To add a new primary number, click on Add a backup 2-step Verification phone (or click the edit/pencil icon next to your current phone number).
5. Follow the on-screen prompts to enter your new phone number and verify it via text message (SMS) or phone call.
6. Once the new phone number is added and confirmed, safely remove your old number by clicking the Trash Can icon next to it.

Need Additional Help?

If you have run out of backup codes or are still unable to access your Google Account, please reach out to Support@gcds.net for assistance.