Stephanie Condon / ZDNet: T-Mobile reports total Q2 revenue of $17.7B, up 30.5% YoY, adding 1.25M customers to reach 98.3M total, claims to be the second largest US wireless provider  —  After finalizing its merger with Sprint in the second quarter and posting solid customer growth, T-Mobile says it has officially surpassed AT&T in the wireless market.