How do I fix my iphone which is frozen up. - Apple iPhone Smartphone

Instructions

Recharge your iPhone. Plug it into a power outlet using the USB cable and power adapter that came with it. Within a couple of minutes, your screen shows a battery icon with a red sliver of power. Don't use your iPhone for at least 10 minutes or until the battery icon turns green. Your empowered iPhone should now be fully functional again.

Force a faulty app to quit. Press and hold the "Sleep/Wake" button on your iPhone's top-right edge. Release your hold when a red slider appears onscreen. Ignore the slider and press the "Home" button for six seconds. Your iPhone should return to the home screen, fully operational.

Force your iPhone to restart. This technique is especially helpful when your iPhone refuses to turn off normally. Simultaneously press and hold the "Sleep/Wake" button and the "Home" button for about 10 seconds. Ignore the red slider that appears onscreen and release your hold when the Apple logo appears. Wait for your device to reset itself to normalcy.

Reset your iPhone's settings if your device allows access to them. Tap "Settings," followed by "General." Then tap "Reset" at the very bottom, followed by "Reset All Settings." This restores your device settings to its original factory condition and eliminates any conflicting settings that may have been caused by changes you recently made or a newly installed app. Your songs, music, videos and other data remain intact.

Update your iPhone's software. If a software bug caused your freeze, the latest software may have resolved it. Launch iTunes on your computer and then connect your iPhone using the USB cable that came with it. Click on your iPhone's name when it appears under "Devices" in the left sidebar, followed by the "Summary" tab above the main pane on the right. Click "Check for Update" and then follow the prompts to download and install the update.

Restore your iPhone if all else fails. This resets your device's software and hardware settings to factory conditions, removes all data and then restores everything from a backup. With iTunes launched and your iPhone plugged in, click on your iPhone under "Devices" on the left, followed by the "Summary" tab on the right. Click "Restore" and then "Backup" in the pop-up dialog. Prepare to nurse your iPhone through this process for 20 minutes or more. When done, resynchronize your iPhone in iTunes.