How to erase all data on iPhone 4? - 1

How to erase all data on iPhone 4?

Added (1). Update: Hi, recently my aunt gave me her iPhone 4. But it says it is disabled for 24,654,897 minutes. I've been looking up ways to manually erase the iPhone by just using combinations of the home button and the top button (The button to turn the device on and off), But those just seem to just shut the iPhone down. Also my aunt forgot her iTunes password too, so restoring is not an option anymore. So is there a combination of buttons on the iPhone I can use to erase all the data?

Launch the Settings app from the Home screen of your iPhone or iPad.
Now tap on General.
Scroll all the way to the bottom and tap on Reset.
Tap on Erase All Content and Settings.
You will be prompted to confirm your selection, tap on Erase iPhone.

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