The JB Hi-Fi Mobile app, powered by Telstra, is the easiest way to manage your JB Hi-Fi Mobile services in one place. You can find information about your usage, payments and support. Access helpful features with JB Hi-Fi Mobile app, including: • Sign in securely with two-step verification • View and manage your Pre-Paid SIM, Upfront Mobile and Upfront Mobile Broadband services • Take your service overseas with International Roaming and Day Passes • Filter scam text messages • ‘Message us’ to c