iCloud - Learn how to set up iCloud on all your devices. iCloud Contacts Will Not Sync. Just got off the phone with Apple Support.
Lara19 is correct. Open your address book/contact on your computer (hopefully this is where your most correct/up-to-date list is). Select all contacts (command+a), then go to "file" on the top menu bar and select "export" , then to vCard. Save this file to your desktop. Troubleshooting creating backups. To set your iOS device to back up automatically, go to Settings > iCloud > Storage & Backup and turn on iCloud Backup.
When iCloud Backup is turned on, iCloud automatically backs up your iOS device daily. This daily backup can occur only when the device meets all of these conditions: The device is connected to a power source. The device is connected to the Internet via Wi-Fi. The device's screen is locked.