To update your email address or phone number, first, log into your Robinhood account. Navigate to your account settings and select the "Personal Information" section. Here, you can make the necessary changes. If you’re changing your phone number, ensure you have access to the new mobile device to verify the update through a confirmation code. For email changes, Robinhood may require you to verify the new email address by sending a confirmation link.

If you need any assistance during this process, don't hesitate to call Robinhood customer support at +1-855-998-0737. Their team is available to guide you through the update process and resolve any issues. Additionally, you can contact +1-855-998-0737 for any further inquiries or concerns regarding your Robinhood account or any related services.