If you just recently got a new iPhone 4, connect it to iTunes and iTunes will identify it as a new phone. If you have previously synced your iPhone 3G with that computer before, then iTunes should give you the option to sync the new iPhone with a backup from your latest iPhone 3G sync. When you do that, your files from your 3G will be transferred to your iPhone 4. Hope that helps :)
In iTunes, click on your Iphone and mark the box to sync addresses. At next sync it will sync. If you have a MobileMe subscription it can automatically sync over the air without user intervention.
Your iPhones contacts can be synched with your computers contacts though iTunes. You can set this up by plugging in your iPhone, Opening iTunes, clicking on Contacts, and then checking the box next to sync.
you can not reverse the sync
When you connect it to your computer and open iTunes then click on sync if your handset does not do it automatically. In the latest version of the operating software, the handset no longer requires to be connected to a computer for back up and syncing. Go into the settings and ensure that the backup and sync is active.
You can sync your iPhone to the Nook app including your bookmarks and other pages.
You can but you will be charged for all repairs and it will no longer be jailbroken when you receive it back. It will be returned back to you in the way it came straight from the factory. For the specialist, it is easy to repair it.
Yes, you can restore your iPhone without syncing it with iTunes by using MobiKin Doctor for iOS. This tool allows you to extract backup files directly from iCloud, so you don’t need to rely on iTunes for the restoration process.
you have to create a second user on your computer to sign in and out with you can do this with windows or mac
If you mean backup and restore your iphone data via iTunes. Then yes. Restore data from iTunes backup will wipe your current phone data. If you want to backup your phone data, and merge old bakcup with current phone data when restoring, you can try a tool called Syncios Data Transfer. Syncios supports to transfer data between iPhone and android phone, a selective backup and restore is also available. And all your current phone data will be kept.
Before connecting the iPhone to the different computer, in iTunes go to Edit>Preferences>Device>select Don't Sync Automatically. When you connect the iPhone go to Pictures tab and Other tab (on top of the sync screen) and disselect Sync Pictures and Sync Contacts. Then press apply (bottom right corner).
Log-in in to your iTunes account on your new Mac and then sync as normal. You'll be asked if you want to copy stuff from your iPhone to Mac (which you probably want to do) and then you should be able to continue as normal. Remember to authorize your new Mac with your iTunes account as well.