Screen locks are a very important thing for most of the Android smartphones. If you ever forgot Samsung password for your phone, you must be well aware of the troubles. Not only the screen locks secure your important information stored in the phone but also prevents the apps on running on its own. Thus, if you forgot Samsung password, your phone may be nothing but a rectangular box to you. In spite of several advantages, the biggest disadvantage of a screen lock is to unlock it at that time when you forgot Samsung password.