iPhone without iTunes reset
In the settings of your iPhone 4, you can delete all data and iPhone back to factory settings to reset. So your iPhone is optimally prepared for the resale or exchange.
- Launch the settings App on your iPhone.
- Now, navigate to "General".
- Here you can choose the Option "Reset".
- In the Following you will see two Alternatives (See image). You can delete according to need, only the settings made, or even complete all of the content on your iPhone remove. If you remove all the data and your iPhone to put in the work condition, select the Option "erase all content and settings".

iPhone reset
With the help of iTunes, restore the factory settings
With iTunes, you also have an opportunity to use your iPhone 4 to reset. Connect your iPhone to your Computer and start iTunes.
- Select Tunes in your iPhone 4.
- Now the iPhone menu opens (See image).
- Here you need to click on the button "restore iPhone" and be deleted after a further confirmation, all data on your iPhone.

With iTunes, the iPhone reset
How to get your iPhone set up, you will learn in this practical tip.