If you sell your old iPhone 3g or present it to anyone, you may clean all your personal data and setting. Sometimes you may face various types of operating problems with iPhone 3g, like iPhone 3g freezing, the touch screen not responding, the operating system becoming very slow, applications not closing, applications unexpectedly closing or doesn't run, and all of the reasons can make you decide to factory reset iPhone 3g. Reset iPhone 3g to factory settings will erase all user data and applications which you have stored in the phone memory. Resetting iPhone 3g factory settings is a wise decision if you hand over your ownership. Factory reset, also known as master reset.
* Press and hold the Home button and Sleep/Wake button simultaneously.
* Hold both buttons until the screen goes blank and the red power off slider appears. Wait until the Apple logo, like the above image, appears.
When you can release both buttons, you will see the iPhone is rebooting.
**An iPhone reset will not normally remove or delete data or settings. However, the term reset is also sometimes used to mean deleting all content from the iPhone and/or restoring from a backup.
Connect your iPhone 4 to your PC and start iTunes.
Now click on your iPhone under the device in the left column.
Then click on 'Restore iPhone' in the summary tab.
Click on 'Restore'
Why factory reset iPhone 3g:
Factor reset on iPhone 3g will solve your hang-slow or freeze problem. It will look like the phone now came from the factory, so it is clear that you will lose all your stored data from iPhone 3g after the successful execution of a hard reset on iPhone 3g. Many users are not well friendly with the iPhone iOS because iPhone users are increasing daily. A new user may, unfortunately, delete some OS files or change settings. There are many ways to attract viruses to your iPhone 3g, insecure net or data transfer may occur in unexpected situations for iPhone 3g, and a hard reset iPhone 3g will solve all OS-related problems.How to iPhone 3g factory reset:
There are many ways to factory or master reset iPhone 3g.* Press and hold the Home button and Sleep/Wake button simultaneously.
* Hold both buttons until the screen goes blank and the red power off slider appears. Wait until the Apple logo, like the above image, appears.
When you can release both buttons, you will see the iPhone is rebooting.
**An iPhone reset will not normally remove or delete data or settings. However, the term reset is also sometimes used to mean deleting all content from the iPhone and/or restoring from a backup.
Hard reset iPhone 3g:
Make sure you are connected to the internet, and you are using iTunes latest version.Connect your iPhone 4 to your PC and start iTunes.
Now click on your iPhone under the device in the left column.
Then click on 'Restore iPhone' in the summary tab.