How to reset or factory restore Samsung Galaxy S III T999 device?
There are several ways to reset or factory restore a Samsung Galaxy S III T999 device:
Method 1: Using the Stock Recovery
1. Go to the "Settings" menu on your Samsung Galaxy S III T999 device.
2. Tap on "About phone."
3. Look for the "Build number" and tap on it several times until the "You are now a developer!" message appears.
4. Go back to the "Settings" menu and tap on "Developer options."
5. Enable "OEM unlocking" by toggling the switch.
6. Connect your Samsung Galaxy S III T999 device to your computer using a USB cable.
7. Open the "Samsung Smart Switch" application on your computer and select "Update."
8. Select "Flash to the latest firmware" and follow the on-screen instructions.
9. Once the update is complete, disconnect your Samsung Galaxy S III T999 device from the computer.
10. Press and hold the "Volume up," "Home," and "Power" buttons simultaneously for a few seconds until the Samsung logo appears.
11. Release the buttons and use the Volume button to navigate through the recovery menu.
12. Select "Wipe data/factory data" and confirm your choice.
13. Wait for the device to reset and reboot.
Method 2: Using the Download Mode
1. Go to the "Settings" menu on your Samsung Galaxy S III T999 device.
2. Tap on "About phone."
3. Look for the "Build number" and tap on it several times until the "You are now a developer!" message appears.
4. Go back to the "Settings" menu and tap on "Developer options."
5. Enable "OEM unlocking" by toggling the switch.
6. Connect your Samsung Galaxy S III T999 device to your computer using a USB cable.
7. Open the "Samsung Smart Switch" application on your computer and select "Update."
8. Select "Flash to the latest firmware" and follow the on-screen instructions.
9. Once the update is complete, disconnect your Samsung Galaxy S III T999 device from the computer.
10. Press and hold the "Volume down," "Home," and "Power" buttons simultaneously for a few seconds until the Samsung logo appears.
11. Release the buttons and use the Volume button to navigate through the recovery menu.
12. Select "Install" and choose the "Update.zip" or "Home.zip" file (depending on which firmware you want to install).
13. Wait for the device to reset and reboot.
Method 3: Using Samsung Kies
1. Download and install Samsung Kies on your computer.
2. Connect your Samsung Galaxy S III T999 device to your computer using a USB cable.
3. Launch Samsung Kies and select "Backup and restore."
4. Select "Backup my data now."
5. Follow the on-screen instructions to complete the backup process.
6. Once the backup is complete, select "Restore my data."
7. Connect your Samsung Galaxy S III T999 device to a different computer that has Samsung Kies installed.
8. Launch Samsung Kies and select "Backup and restore."
9. Select "Restore my data."
10. Follow the on-screen instructions to complete the restoration process.
