Samsung Galaxy S, the device which was reportedly sold in more than 300,000 units in Korea in a little bit more of two weeks, seems to be one of the hottest Android-based smartphones. The device comes with a unique UI, especially developed by Samsung called TouchWiz 3.0, thus avoiding to use HTC's Touch Sense graphical user interface. With an incredible SuperAMOLED capacitive touch screen, Galaxy S is among the best mobile phones ever created by the Korean manufacturer.
I doubt that you will ever be bored by anything that has been included with the phone, user interface, widgets, applications, functions, options. But, like every other gadget that someone uses on everyday basis, you will eventually want to start tweaking and customizing your Galaxy S smartphone. There's also a high chance that will want to redo all the changes you made, after a while. Users that want to revert to the factory settings of their Samsung Galaxy S can follow the steps described in the next guide.
Bear in mind that after the factory reset is done you will lose all the information stored on your phone's memory, including any third-party applications installed. Note that if you have a microSD card memory inserted, the information stored will not be erased.
Before proceeding I suggest doing a backup of your data stored on the phone's memory. Then power off your device. Hold the Volume Down button and press and release the Power button. A window with some option will be displayed on the screen. You can use the Volume Up/Down buttons to scroll between these options. The following options are present to you on the screen: Fastboot, Recovery, Clear Storage and Simlock. You need to select the Clear Storage option and then click and release the Power button again. The last step of the process is simply confirming your selection, press Volume Up for YES and Volume Down for NO.
Once the clearing operation is complete, the smartphone will reboot fresh, as it was shipped from the factory.
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How to Hard Reset the Samsung Galaxy S
Three steps method
... so hot right now