Connect your device to the charger press power button and volume down together and hold on for a few seconds until you see Samsung Galaxy logo, now press power, button and volume up together and hold on for a few seconds until you see Samsung Galaxy logo then release power button, but stay hold on volume up for a few seconds. Until you see android recovery screen use volume down button to select wipe data, factory reset and press power. Key press power button to select factory data, reset press power button to select reboot system now wait a few minutes and your device will be back as it was in new. If you find this video useful, please subscribe to the channel and hit the like button.
Source : Varieties Teck