If your Android phone freezes frequently, running slow and drains the battery very quickly, restoring to default factory settings might be useful. I had problems with my one year old Samsung Galaxy S2 which used to hand very frequently while using web browsers and after the Ice Cream Sandwich update, the battery used to drain completely in 2-3 hours. In this tutorial we will see how to restore factory setting on your Samsung Galaxy S2 phone. You can use it for other android phones as well.
Before proceeding, please backup your data on the phone.
Turn off your phone. In case it is hanged, remove the battery and thus turn it off.
Now, with the phone off, hold down the Power, Volume Up and Menu buttons simultaneously for approx. 10 seconds. Release the buttons when you see the android logo on the screen. This will bring us to the boot menu which in looks is similar to Linux boot menu.
In the boot menu, use the volume button to navigate up and down between the options. Select option of Wipe Data/Factory Reset. When prompted, select ‘Yes – Delete All User Data‘. It will take couple of minutes.
Once the reset process is done, you will be back on the boot menu. Now choose the Reboot System Now option. You have successfully restored your phone to factory settings. Now you will be asked to follow instructions as you were asked the first time you used your phone.
Tip to save battery life:
If you were suffering from extremely fast battery drain, avoid installing all the apps back from your Google accounts. This is because most of the some incompatible app is responsible for the battery drain and you may never find out which one. So if you can, then avoid restoring your apps. This might be painful, but trust me, my phone battery now easily lasts 12-16 hours even if I use the data connection.
Image Courtesy: Vodafone