Follow the below steps to hard reset iPhone 4/4s: Step 1: To start with, press and hold down the Home and Sleep/Wake buttons together. Step 2: Keep holding both buttons until the screen of your device goes black. Step 3: Now, wait until you see the Apple logo on your screen. Once it appears, release
Very easy Introduction Go to step 1 Step 1 How to Force Restart an iPhone 4 Press and hold the Home button. While holding the Home button, press and hold the Sleep/Wake button. One comment Step 2 Continue holding both buttons for about 10 seconds, until the Apple logo appears. 4 comments Finish Line Give the author +30 points! Smartphones APPLE iPhone 4 Master Reset APPLE iPhone 4 Check out the alternative method of Hard Reset operation called master reset. By using our tutorial you can perform a master reset of APPLE iPhone 4 in just a few steps. Follow our instructions to delete all data from APPLE iPhone 4. Press and release the volume up button (you don't need to hold for a long time, just a regular press will do.) 2. Press and release the volume down button. 3. Press and hold the power button. hVZUT.