HT4895: Using your Apple ID for Apple servicesLearn about Using your Apple ID for Apple services
Currently Being ModeratedFeb 4, 2013 1:56 PM (in response to marydremos)
First be sure you are using iTunes 10.7 or higher, which is required to sync the iPhone 5. If you aren't, update iTunes to the latest version.
If iTunes is up to date, go through the troubleshooting steps in the article below based on the operating system on your computer: