This poll is for iPhone 3GS users only. If you have upgraded to iOS4 on your 3GS, are you satisfied? Please answer the poll. You may enter more than one answer! If you have app incompatibilities or crashes at present on iOS4 using your 3GS, please list them. Granted, as developers update their apps for iOS4 these issues may go away. Additionally, Apple will probably release fixes for any problems. That is why this poll expires 60 days from the beginning.