To move information from iPhone 3g iPhone 3GS follow these steps:
1.Make sure you have the latest version of iTunes and iPhone OS. Download the latest version of iTunes and remember to install it after you download it.
2.Connect your iPhone 3G to iTunes and sync it. Verify that your iPhone 3G is backed up. For more information on how to do this, see iPhone backups guide.
Be sure to transfer any purchased apps on your iPhone 3G to iTunes by synching or right-clicking the device tab and selecting “Transfer Purchases.” You then will be able to sync the apps from iTunes to the new iPhone 3GS.
3.Connect iPhone 3GS to iTunes (on the same computer you used to back up your iPhone 3G).
4.iTunes will ask you if you want to restore from a backup or set up iPhone 3GS as a new phone. When prompted, select the backup of your iPhone 3G. If iTunes does not prompt you to select a backup to restore when you connect iPhone 3Gs, use iTunes to restore iPhone OS on your iPhone 3GS and try this step again.
Note: During the process of restoring your old backup to a new iPhone 3GS, you may see the iTunes progress bar pause. If this occurs, please allow for additional time for the upgrade to complete.
5.After iTunes finishes restoring the backup you selected to iPhone 3Gs, it will restart.
6.When iPhone 3GS appears again in the iTunes window, select it.
7.Click the tabs (Music, Photos, and so on) and verify or change the items you want to sync.
8.Click Apply to sync iPhone 3GS with iTunes.
9.Verify that your saved SMS messages, email accounts, passwords, photos, notes, and other personal settings are present on your iPhone 3G. Note that you will be required to enter your email account and voicemail passwords again. If you do not remember your voicemail password, you can reset it.
Note: If saved SMS messages, email accounts, photos, notes, or other personal settings are not present on your new iPhone 3GS, then restore-from-backup may not have been successful. In that case, verify your original iPhone is properly backed up (see step 2), then use iTunes to restore iPhone OS on iPhone 3GS and continue following these instructions at step 3.
www.iphoneservicesdepot.com