Try rebooting it at first i.e press and hold the power and the home button together for 10 seconds. If that does not work connect the phone to your computer and open up iTunes if it detects your phone try to restore (it will clear up all your data).
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If both that above techniques fail then you will have to go to DFU mode by the following process
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If both that above techniques fail then you will have to go to DFU mode by the following process to fix [https://www.forecovery.com/fix-ios/iphone-stuck-on-apple-logo.html|iPhone stuck on Apple logo]
Connect to the computer
Turn off your phone
Hold the power button for 3 seconds
Hold both the power and home button for 10 seconds
Release the power button but keep holding the home button for 15 seconds
Itunes will then alert you that your phone is in recovery mode
Follow the instruction in iTunes to restore your phone.
Try rebooting it at first i.e press and hold the power and the home button together for 10 seconds. If that does not work connect the phone to your computer and open up iTunes if it detects your phone try to restore (it will clear up all your data).
If both that above techniques fail then you will have to go to DFU mode by the following process
Connect to the computer
Turn off your phone
Hold the power button for 3 seconds
Hold both the power and home button for 10 seconds
Release the power button but keep holding the home button for 15 seconds
Itunes will then alert you that your phone is in recovery mode
Follow the instruction in iTunes to restore your phone.