The LG GT540 Optimus on Orange Pay As You Go mobile phone is surely the smartest and most feature-packed smartphone from LG. the LG GT540 Optimus specs include a full-featured 3G with Wi-Fi, a powerful 3.15 MP camera, lots of social integration apps and many more impressive features. The LG GT540 Optimus price is really inexpensive considering the bundles of features it provides.