Q: how to restore factory settings iphone 4

Plug it in, iTunes running, hit the "Restore" button.

Follow these instructions: 

http://support.apple.com/kb/HT1414

If you want to restore factory settings but retain your media, go to Setting-General-Reset and tap 'Reset All Settings'.

i have ios 5 on my iphone 4 and it wont restore in itunes

Hi,

Take a look at the following page, Unable to update or restore.

Hope this helps.

Soren Pearson,

I want to thank you for the link you provided above. It really saved my day.

Thanks a lot... your link helped me out. God bless.

Well, just have the iPhone turned off and connected to the computer, and then hold the home screen button with itunes open for 10 seconds. It will recognize it, and you can just hit restore.

And I would like to share you below articles about restore data from iPhone:

* How to restore iPhone from iTunes backup files

* How to put your iPhone into DFU Mode for Restore

I have an issue..

I plugged my iphone in, it shows the connect to itunes icon, started itunes.. it detects my iphone, and asking to restore. I clicked OK. Clicked Restore iphone button . I pressed restore and update against the "Are you sure you want to restore iphone" warning message. it extracts software, but at the end crashes and shows the report screen.

How can I get through this in order to restore my iphone? can anyone help?

When you made the backup, you may have told it to encrypt the backup.

Therefore I used the normal iTunes backup and restore found under the Summary tab in iTunes. If your data is still on the other phone, back it up again with iTunes. To use iTunes you have to start it, connect your phone to the computer with a cable, then select the iPhone button near the top right corner of the screen. Be sure not to check the encrypt button. You can recover iPhone data to factory settings successfully.

Try restoring the iPhone from recovery mode.

If you're restoring it from the computer that you last synced it with, you can restore from backup without the passcode. But, you'll have to set it up as a new device, if it isn't the computer you last synced it with.

It is a fantastic tips to help you.

http://www.iphone-mac.com/how-to-restore-iphone-to-factory-setting.html

I had the same problem. I had to first restore all settings. Then I restored all content and settings and that worked for me.