Once again, SK Telecom has upped their investment in US MVNO carrier, Helio.

“SK Telecom’s investment is a ringing endorsement of Helio’s business strategy and long term growth potential. They’re one of the world’s most successful mobile companies and it recognizes the value of our business.

EarthLink remains an enthusiastic shareholder that will continue to contribute to Helio’s ongoing success. But given this huge investment by SKT, EarthLink and SKT are in discussions to amend their existing agreements to reflect the additional investment by SK Telecom and the future governance of Helio.”