iOS html text is not working properly in attributed string

I got the solution.I tried sample one for your question.I got and it works fine.

NSString *strHTML = @"<style>body{line-height: 0;}</style><font face=\"Calibri\"><b>Get moving!</b> (and Sync to see your points.)</font>";
NSAttributedString *attrStr = [[NSAttributedString alloc] initWithData:[strHTML dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];
lblHTMLString.attributedText = attrStr;

The Output Screenshot is

Try this:

 NSString *description = @"<style>body{line-height: 0;}</style><font face=\"Calibri\"><b>Get moving!</b> (and Sync to see your points.)</font>";
    self.lblDescription.attributedText=[self getData:description];

//Convert HtmlString to string
-(NSAttributedString *)getData:(NSString *)str
{
    NSData *stringData = [str dataUsingEncoding:NSUTF8StringEncoding];

    NSDictionary *options = @{NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType};
    NSAttributedString *decodedString;
    decodedString = [[NSAttributedString alloc] initWithData:stringData
                                                     options:options
                                          documentAttributes:NULL
                                                       error:NULL];
    return decodedString;
}