More on Sprint Nextel (S) Q2: net losses widen to $1.37B from $863M a year ago. Contract customers spent $63.38/month on mobile-phone services, up $4.31 from a year earlier. Sells 1.5M iPhones, well below AT&T and Verizon. Loses another 246K contract customers, partly due to winding down of Nextel network. Shares +15.7% premarket.