Set Your Phone To Sync With Your Computer - Nokia 900 User Manual

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The personal unblocking key (PUK) code and the universal personal unblocking key
(UPUK) code (8 digits) are required to change a blocked PIN code and UPIN code,
respectively. The PUK2 code (8 digits) is required to change a blocked PIN2 code.
These codes are not supplied with the SIM card. Contact your local service provider
for the codes.

Set your phone to sync with your computer

With the Zune PC app, you can sync music, videos, and pictures between your phone
and your compatible computer. You can also back up and update your phone with the
latest software, to improve performance and get new features.
To download and install the latest version on your PC, or to learn more about Zune,
go to www.zune.net.
Tip: If you're using an Apple Mac, download Windows Phone 7 Connector for Mac from
Mac App Store.
If you have previously used another app, such as Nokia Ovi Suite, to sync your files
between your phone and computer, you can set Zune to sync files to the same folders
Keep the code secret and in a safe place, separate from your
phone.
If you forget the code and your phone is locked, your phone
will require service. Additional charges may apply, and all the
personal data in your phone may be deleted.
For more information, contact Nokia Care or your phone
dealer.