Korean big 3 mobile operators (SK Telecom, KT and LG U+) have been presenting innovative LTE services (LTE-A, LTE CA, etc.), all world’s first, every year since its LTE service launch in 2011. The operators have posted higher ARPU and revenues thanks to an increase in LTE subscriptions, which has a higher ARPU than 2G/3G. However, recent years have seen a stagnation in mobile subscription...