itunes will back up your apps when you sync your iPhone if the computer is authorized (store-authorize computer in itunes).
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 :)
To sync your contacts back to your iPhone using MobiKin Assistant for iOS, follow these steps: Install MobiKin Assistant for iOS on your computer. Connect your iPhone to the computer via USB and trust the computer. Open MobiKin Assistant and select “Contacts.” Import contacts from your computer to your iPhone using the “Import” option. Check your iPhone to confirm the contacts are synced.
you can not reverse the sync
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).
Yes, when you use MobiKin Assistant for iOS, your iPhone contacts can be synced to your computer. Here's how it works: Launch MobiKin Assistant for iOS and connect your iPhone via USB. Once detected, go to the "Contacts" tab. Preview, select, and click "Export" to back up contacts to your PC or Mac. This syncs your iPhone contacts to your computer for safe backup, management, or transfer—without relying on iCloud or iTunes.
You can sync your iPhone to iTunes to transport music, pictures, videos, etc.
You can sync your iPhone to the Nook app including your bookmarks and other pages.
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.
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.
iTunes will backup everything on the iPhone, including SMS messages and contacts. You can do this in iTunes with the iPhone selected on the left, then click the Info tab and make sure Contact syncing is enabled.
you have to create a second user on your computer to sign in and out with you can do this with windows or mac