Is there a way to get a content of CCUserDefault's file?

I need to get a content from a file in which CCUserDefault() stores its data. Is there a way to get it? I guess my storage is corrupted so I need to check its content.

I’ve tried following:

if ( cocos2d::CCUserDefault::sharedUserDefault()->isXMLFileExist() ) {
    cocos2d::CCLog( "XML exists!" );
} else {
    cocos2d::CCLog( "XML not exists!" );
}

So I get “XML not exists” on Android and iOS but a user setting successfully loads. Where CCUserDefault() stores its data?

By the way I stored utf-8 data with CCUserDefault maybe it’s the reason of my problem…?