csl. Mobile Limited provides comprehensive mobile voice and data services via CSL and 1O1O. Offerings are carried by a unique combination of 4G LTE, DC-HSPA+ and Wi-Fi networks. The company leads the market in innovative application of the latest technologies, and benefits from Hong Kong’s first deployment of VoLTE, which connects voice and video calls via a 4G LTE network, as well as the pioneering launch of SIM-based mobile payment services based on NFC (Near Field Communication) technology and partnerships with Octopus, Hang Seng Bank, HSBC and JETCO. For more information, please visit www.hkcsl.com for CSL , or www.1010.com.hk for 1O1O.