How do I unfreeze my casio GZone cell phone?

I have a Verizon Casio Gzone cell phone that has frozen up. I cannot get it to unfreeze even when I take the battery out. Any suggestions out there?
uah2no, April 2009
You nearly certainly will have to perform a hard re-start which is usually in your manual. It means putting the battery in and using certain keys to return phone to original makers settings. All data stored will be deleted.

Stuart, May 2009
link Click here to see other fixes for Casio.