On paper, Sprint and T-Mobile seem like complete opposites: Sprint has 4G, T-Mobile has "4G speeds" with HSPA+; Sprint is CDMA, T-Mobile is GSM; Sprint is yellow, T-Mobile is magenta.  Ok, maybe that last one is a bit of a stretch, but you get the point.  Despite the glaring differences, a rumor has surfaced today stating that the two carriers may soon be in cahoots to finish building out Sprint's 4G network.  Three people "familiar with the situation" have spoken to the Wall Street Journal, saying that Sprint's board of directors is considering allowing T-Mobile to invest in Clearwire, the company that is aiding Sprint with their WiMAX network (Sprint also owns 54 percent of Clearwire).  Clearwire currently needs billions of dollars to finished expanding its 4G network, the WSJ says, and it needs to figure out if it will continue to soldier on alone or get some financial aid from T-Mobile.  This isn't the first time we've heard the possibility of Sprint and T-Mobile teaming up and, if Clearwire and Sprint need as much cash as the WSJ says they do, it may not be the last time.

Although Sprint and T-Mobile could use each other to help bring the fight to AT&T and Verizon, I would be kind of surprised to the number three and four carriers come together.  T-Mobile seems pretty invested in their HSPA+ network upgrades and, if they were to invest in WiMAX, their hot new HSPA+ phones would become kind of obsolete.  It would, however, allow them to immediately have a 4G network available to some of its customers, so maybe the idea isn't so far-fetched.  What do you think, readers?  Will we soon be hearing about SprinT-Mobile?

Via Phone Arena, Wall Street Journal