Later this month, Sprint will formally announce its plans to bring 4G LTE service to its subscribers via a network-sharing deal with Virginia-based LightSquared, CNET reports. The move, seen as inevitable by some, was outed last month when LightSquared owner Philip Falcone revealed the deal in a letter to Harbinger Capital Partners investors. “Sprint will become a significant customer of LightSquared’s 4G LTE network,” Falcone stated in the letter. The deal, which could be worth as much as $20 billion over the next 15 years according to an earlier report, will let Sprint’s U.S. network be used as the backbone for LightSquared’s 4G LTE buildout. CNET says the deal will be revealed on July 28th when Sprint reports its earnings for the June quarter.