Thanksgiving evening my iPhone was stuck at the Apple logo and would not budge past it. When I plugged the phone into my computer not even iTunes recognized it. I tried doing a soft reset where I held down the home and power buttons for about 10 seconds, and the phone will turn off and turn itself back on, but the Apple logo just would not go away. I knew that iTunes had done a backup of my phone just the day before, so I knew I could do a hard reset of my iPhone.
Doing a hard reset of an iPhone will solve almost any software problem occuring with your phone, it is also a good thing to do before selling an old iPhone. The hard reset will return your iPhone to the initial factory settings:
- Turn off your iPhone
- Connect your iPhone via USB cable to your iTunes computer
- Hold the home and power buttons for about 10 seconds
- Release the power button but continue holding the home button
- You can release the home button once iTunes pops up with a message saying it has detected a phone in recovery mode
- Your phone will reactive and then you can restore from your last backup in iTunes.
Sometimes this is called putting your iPhone into recovery or DFU mode. If you are going to sell your iPhone then don’t restore from backup.