Cellphone Round-Up

• From Tom Schoenberg: "The U.S. government sued to block AT&T Inc.'s proposed $39 billion acquisition of T-Mobile USA Inc., saying the deal would 'substantially lessen competition' in the wireless market."
• "Google and Apple continue to eat up more of the smartphone market, while RIM and Microsoft continue to lose ground," reports Ben Parr.
• One possible argument against the notion that Samsung might purchase WebOS from Hewlett Packard: The company already owns its own proprietary cellphone platform, known as Bada, and has just introduced a new series of Bada 2.0 phones.