South Korea’s SK Telecom is planning to invest up to $270 million in Helio its loss-making US mobile venture with US-based internet service provider EarthLink, Inc.

South Korea’s SK Telecom is planning to invest up to $270 million in Helio its loss-making US mobile venture with US-based internet service provider EarthLink, Inc. The company will use these funds to expand Helio’s subscriber base through handset and service development and marketing activities.