1. PIN Number
A PIN number is the best and safest way to lock your Android device. You can make an easy 4 digit PIN code, or, a more difficult 5 or more digit PIN code. Make sure it is easy to remember so I recommend a 4 digit PIN code. Just don't make your birthday or any date that is special to you that everyone knows about. Make sure that now one is looking
2. Pattern
A pattern is not the safest lock screen because if you shin the screen in light you see a smudge line that revels the pattern which makes it not the safest. To make it a little safer you can make the pattern invisible. Go to your settings, security, set up a pattern, tap "make pattern viable" to test it lock your device and enter your pattern it should be invisible.







