Shivering screen I was using internet and all of a sudden the iphone4 hangged when i opened it by pressing both home button and power button together it started but then some blurry sort of orange colour appeared on the background screen and even the background started shivering....how to fix this???

In iPhone4 we can use the Home button for various purposes. By default the home button is for taking us to the home screen.We can unlock the screen when it is turned off by pressing home buton once and sliding the screen to unlock. Pressing the home button we can reach the Spotlight screen.For activating the voice control we have to press the home button for two seconds.By pressing the home buttton and sleep/wakeup button at same time we can take the image of the currently dispayed screen. The screenshot will be saved to the saved photis album.In iPhone4 we can perform the Multitasking.Pressing the Home button twice activates the multitasking menu bar at the bottom of the screen.We can open any application in the multitasking br by tapping its icon.We can close any application displayed in multitasking bar by tapping and holding and pressing the red minus symbol on the upper left corner of the application when they start moving.The Triple click feature in iphone privides accessiblity features. For activating the triple click feature go to Settings-->Accessiblity and tap on the Off arrow next to the Triple Click Home.After that select the one of displayed options

a) Off(Triple Click Disabled)

b) Toggle Voice Over(When toggled on, voice over audibly describes the current screen and actions we are taking)

c)Toggle White on Black(When Toggled on this inverts the colours on the screen, which makes it easier to read)

First, if you haven't already tried it, please remove and re-insert the battery.<br /><br /><b>The following method erases all data from the handset's memory, and sets it back to original factory settings. It does not erase the sim card or the memory card. </b><br /><br />There are two ways to perform a Factory Data Reset, also known as a master reset or hard reset. Since we cannot boot into the device, we will perform a hard reset:<br /> <ol> <li>The device must be powered OFF to perform this reset.<br /><b>Note: </b>If the device is not responsive and does not turn off, remove the battery and re-insert it. </li> <li>Press and hold the <b>Home</b> button (picture of a house on it) and the <b>Power</b> button (the red hang-up button) at the same time.</li> <li>Keep holding <b>Home </b>and <b>Power </b>together for at least 25 seconds, even if the "Startup" screen appears.</li> <li>Release the keys when you see a black screen with a warning sign.<br /></li> <li>Slide the keyboard open.</li> <li>As a shortcut, press <b>ALT+W</b> to factory reset the device. If this does not work, continue with the below steps.</li> <li>Press <b>ALT+L</b>.<br /></li> <li>Press <b>Alt+W</b> for 'wipe data/factory reset'.</li> <li>Press the <b>Home</b> + <b>Back</b> key.<br /></li></ol>