HT203034: iOS: About diagnostic capabilities
Learn about iOS: About diagnostic capabilities
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All replies
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Helpful answers
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Nov 2, 2015 4:04 AM in response to Shicaslayinby thunderzzz,Turn your device off and then force it to start. To do this, press Sleep/Wake and Home buttons and hold them for at least 10 seconds.
If this does not help, take a look these Apple Support articles:
If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support
Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support.