How to dial a phone number with "##"?
<p>I want to dial a phone number like "##8004664411" in IPhone.</p>

<p>If I dial the number "8004664411",it works.But if the number contains the symbol"##",it doesn't work.</p>

<p>Here is the code that I am using which is not working:</p>

<pre><code>[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://##8004664411"]];
</code></pre>

<p>Is the escape character wrong?</p>
