Welcome to Android Forums. Sorry for the delay in responding to your question.
If your not rooted and have never been rooted, try a factory reset.
If you are rooted or have ever been rooted then go here: Samsung Galaxy Note 2 - Android Forums
Scroll down to the bottom of the forum for a link to your carrier specific All Things Root sub-forum.
Hope this little bit of info has helped.
AndyOpie150
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