In vc.h

@interface vc : UIViewController<UIWebViewDelegate>

in vc.m

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
    
    
    if (navigationType == UIWebViewNavigationTypeLinkClicked){
        //open it on browser if you want to open it in same web view remove return NO;
        NSURL *url = request.URL;
        if ([[UIApplication sharedApplication] canOpenURL:url]) {
            [[UIApplication sharedApplication] openURL:url];
        }
        return NO;
        
    }
    
    return YES;
    
}