South Korean wireless carrier SK Telecom has officially begun the commercial rollout of its Multi Carrier (MC) network. The technology, which will be available in twenty-three cities by the close of 2012, will allow equipped devices to seamlessly wander between the 800MHz and 1.8GHz LTE frequencies (while also adding 20MHz of uplink/downlink spectrum). Aside from improving throughput and coverage within the country, SK hopes the addition of the 1.8GHz frequency to its handsets' repertoire will provide customers with a better LTE roaming experience when abroad -- a handful of Asian and European nations have settled on 1
