You can change the account details in the JB Hi-Fi Mobile App or Web.
JB Hi-Fi Mobile in a browser and the JB Hi-Fi Mobile app let you manage your account and services from your computer, compatible smartphone or tablet. Your Telstra ID is the only sign-in you need to access your JB Hi-Fi Mobile Pre-Paid Plan. If you don’t have one, register for a Telstra ID now.
Select Profile, under "Manage your profile" you can choose "Account settings" and update personal details.
Note: Please be mindful, if you update your account details for your JB Hi-Fi Mobile Pre-Paid Plan in the JB Hi-Fi Mobile App, this will also update your details in your My Telstra app.
Download the JB Hi-Fi Mobile app