- Turn off the phone.

- Press and hold at the same time Volume UP,Home and Power keys.

- When you see Galaxy logo release the Power key but continue to hold the Volume Up key and the Home key.

- Release them when the Android System Recovery screen appears.

- Use the Volume Up/Down keys for navigation and the Power On key for OK.

- Choose "wipe cache partition", "Yes -- delete all user data", "reboot system now".

- That's all.

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