Hong Kong's operator CSL has launched commercial 1800MHz/2600MHz dual-band 4G LTE network for its premium brand 1O1O. Operator launched its 4G LTE mobile network in Hong Kong in November 2010 and already covers 90 per cent of the population.

CSL’s latest network upgrade is based on Software Defined Radio (SDR) which allows dual band LTE frequencies 1800MHz and 2600MHz in a single radio cell. According to the operator, the result is significant savings of up to the equivalent of five times the space, it aids the future stability of the 1O1O network and ensures customers have a consistent experience.

CSL already have signed 4G LTE international roaming agreement with South Korea's SK Telecom in June this year and plans to partner with more operators in the region this year.