<p>Unleash the power of your iPhone with these step-by-step guides and features. From recording guitar tracks and syncing iCal to testing you eyesight and viewing Flash, this book will help extend the functionality of your iPhone. 100 top tips &amp; tricks - This ten-page feature will help you get more from the iPhone&#39;s default apps. Step-by-step guides - Tutorials helping you to do more with your iPhone. Jailbreaking - All your questions answered and the benefits explained. App reviews - FThe best apps to help extend the usability of your iDevice.