This mobile app is designed, developed and maintained by SamKnows Limited as commissioned by the Office of the Communications Authority for provision of broadband performance test service in Hong Kong. The data usage for the use of this mobile app varies with the speed of mobile broadband connection under test. Please refer to “About” tab inside the app for the evaluation of data usage. Users are advised to keep track of their data usage from time to time in order to avoid any unnecessary mobile bill charges.