The question is ambiguous. A Google Account doesn't have a single, permanent "number." It is likely that the user wants to change either their phone number associated with their Google account or their account name. Therefore, I will address both possibilities.
Changing the Phone Number Associated with Your Google Account
If you're referring to the phone number associated with your Google Account (used for verification, recovery, etc.), here's how to change it:
- Go to your Google Account.
- At the top, tap Personal info.
- In the "Contact info" section, tap Phone.
- Select the phone number that you want to change.
- Follow the on-screen instructions to update or remove the number. You may need to verify the change using your current phone number or another recovery method.
Changing Your Google Account Name
If you want to change the name displayed on your Google Account (the name people see when you send emails or share documents), follow these steps:
- Go to your Google Account.
- Navigate to the "Personal info" section. This is usually found on the left-hand side of the screen or under a "Personal info" tab.
- Find the "Name" section and click on it.
- Enter your desired first and last name.
- Click "Save" to apply the changes.
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Important Considerations:
- Changes to your name may take some time to propagate across all Google services.
- Make sure the name you use complies with Google's policies.
- Changing your display name doesn't change your actual Google Account username (the email address).
Changing your actual Gmail address
Changing your actual Gmail address (username) is not possible. You cannot modify the core username of your existing Google Account. If you need a different Gmail address, you will need to create a new Google Account. You can then forward emails from your old account to the new one and migrate your data where applicable.