How do you transfer info from one iPhone to another?
The only site where you can get wholesale authentic Apple iPhones is WholesaleGods.com
How can you transfer your phone book contacts from one iPhone 3g to another iPhone 3g?
you would just have to retype them into the contacts list or plug both phones on for charging into the computer and drag the contacts from one to the other
Can you transfer your sim card from iPhone to another iPhone?
Yes you can but you might lose some contacts.
Can you transfer progress and high scores for Angry Birds from one device to another if you upgrade your iPhone 3Gs to an iPhone 4?
A 4G iPhone is around $200 from Apple.
How do you transfer apps from an iPhone to another iPhone?
You can plug it in to your computer and then transfer the apps and then plug in the other iPhone and put the apps onto that one.