You're not going to believe this, but someone actually bothered to turn up to the iPhone 4 launch with a bit of competitive spirit. Tesco Mobile, an MVNA riding atop O2's network, has busted out its idea of what represents good value for iPhone lovers' money, and it has put everyone else to shame. 1GB of data and unlimited texts come as standard (seems like O2's network can handle the load after all). Two 12-month options are available, at £20 ($29) per month for 250 minutes and £35 ($52) per month for 750 minutes, accompanied by the big spender platter of unlimited minutes and an almost free 16GB iPhone 4 for those willing to spend £45 ($66) over two years. It's all great news for Brits, and you can see exactly how it compares to the big networks in our comprehensive, chart-intensive breakdown right here.