An apparatus for measuring and displaying Internet traffic of a mobile device, which includes a traffic measurement module and a traffic display module. The apparatus also includes a SIM card account creation module configured to create a SIM card account for each of a plurality of SIM cards. The traffic measurement module measures the Internet traffic of each of the SIM card accounts. The traffic display module displays the Internet traffic of each of the SIM card accounts. The Internet traffic of each SIM card on the mobile device may be measured and displayed.