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If you already reset the phone by selecting 'Restore all' under Settings, the next thing that you can do is to update the software of your Nokia C2-02. Check this link for the instructions: Nokia-Software-Update .
If there is no software update available, you may check for the 'reinstall' option in the Nokia Suite. It's under Software Update, and then select Device Software. This will also restore the preloaded apps that were erased after the reset.
Hope this information helps.