everywhere i read it says that the new software update OS 4 has over 100 new features. i have an Iphone 3GS which means I should get all of these new features. I verly downloaded this update yesterday and everywhere i go to read about the features it only talks about like the most 20 new features......what exactly are the rest of the 80 other features it has to offer? i know they might be minor new things but i would like to know what else my phone can do. plzz helppp