How to make iOS UIWebView display a mobile website correctly?

To display the mobile website correctly, try the following fix:

mywebview.scalesPageToFit = YES;
mywebview.contentMode = UIViewContentModeScaleAspectFit;

You can also set the following:

NSString *js = [NSString stringWithFormat:@"document.body.style.zoom = 0.8;"];
[webView stringByEvaluatingJavaScriptFromString:js];