<p>This one is for jailbreakers <strong>only</strong>:</p>
<p>If you&#8217;re trying to <em>unofficially</em> unlock your iPhone, there are lots of guides around. I&#8217;d recommend the unlocking tutorials at <a href="http://www.iclarified.com/tutorials/index.php">iClarified</a>, in particular. But it can be confusing.</p>
<p>I like sites that cut through the cruft, and I&#8217;ve just found out about <a href="http://caniunlock.com/">Can I Unlock My iPhone?</a></p>
<p>It&#8217;s up-to-date with current jailbreak and unlock developments, and gives you a simple answer, based on your iOS device and firmware.</p>
<p>If you&#8217;re looking for an <em>official</em> unlock from your UK mobile phone network, then <a href="http://www.allaboutiphone.net/2010/05/full-iphone-unlocking-policies-of-uk-networks/">I&#8217;ve previously written about that</a> (but it needs to updated for iPhone 4). </p>
<img src="http://feeds.feedburner.com/~r/allaboutiphonedotnet/~4/v4MWIQgTP3U" height="1" width="1"/>