How to Backup an iPhone 3GS
- 1). Download iTunes on your computer. The program is available to download on Apple's website. Once the download is complete, you will be guided through installing the program.
- 2). Connect your iPhone to the computer using the USB-to-iPhone connector that was included with the phone's original packaging. The phone will be recognized by iTunes when connected.
- 3). Right-click your iPhone's name in the "Devices" menu on the left.
- 4). Click "Back Up" and wait for the process to begin. When your phone's backup is complete, you can disconnect the iPhone 3GS from the computer.