The ongoing growth in mobile data traffic has sparked the interest of several stakeholders, including users, application developers, network operators, content providers, businesses, and regulatory authorities. Network operators are making significant investments toward upgrading their networks to higher-speed 3G/4G networks. Telecom regulatory authorities, with aid from governments, are releasing unused spectrum, sharing currently assigned spectrum, and working toward improving spectrum usage efficiency and sharing. Content providers and application developers are tailoring their products and services for an enhanced mobile experience. This special issue covers three topics in the high-performance mobile Internet domain: crowd-sourced measurements, mobility for video traffic, and personalization on the mobile device.