Nokia 309 - Manual (Page 84)

Update phone software using your PC
Update your phone software with the Nokia Suite PC app. You can
also back up the photos and other stuff in your phone to your
computer.
You need a compatible PC, a high-speed internet connection, and a
compatible USB cable to connect your phone to the PC.
To get more info and to download the app, go to www.nokia.com/
support.
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