Is your iPhone not responding or not operating as expected? This troubleshooting assistant can help you resolve these most common issues:
To restart iPhone, first turn iPhone off by pressing and holding the Sleep/Wake button until a red slider appears. Slide your finger across the slider and iPhone will turn off after a few moments.
Next, turn iPhone on by pressing and holding the Sleep/Wake button until the Apple logo appears.
Is iPhone not responding? To reset iPhone, press and hold the Sleep/Wake button and the Home button at the same time for at least 10 seconds, until the Apple logo appears.
If your device does not turn on or displays a red battery icon, try recharging next.
If iPhone is very low on power or if the battery is fully depleted, charge it using an AC adapter or connect to a high-power USB such as the one on your computer.
If the iPhone's battery is extremely low on power, the display may remain blank for up to two minutes before a low-battery images appears.
If your iPhone displays a low battery image, it can take up to 20 minutes of charging before the iPhone will start up. You can press the Home button to check the current charging status.
If only a single app has stopped responding or closes on launch, try the following:
If multiple apps are closing or restarting, please view this App assistant.
Updating your iPhone may solve your issue
To update wirelessly, tap settings > general > software update and follow the on screen instructions.
If you can't update wirelessly, try connecting to a computer and using iTunes to update your iPhone. For more information, see this article.
To restore your iPhone, first make sure you are using the latest version of iTunes.
Next, connect iPhone. In the left column under Devices, click on your iPhone, then click on Restore in the Summary tab.
For more information about backing up, updating, and restoring your iPhone software, see this article.
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