This is generally for the people who don’t know anything about the phones & they get cheated while buying new phones & resell phones as well as during repairs. The information provided in here work for nearly all Android phones. Android users can unlock some hidden features of their cell phones. But user can use these codes at their own risk, anyone is not responsible of any damage or data loss or any problem occurred. This article will answer all your How-to questions mentioned above and many more questions too which I forgot to list here.