[header] How to unlock an android tablet [title] Enter an incorrect pin or pattern 5 times. [step] If you're using a tablet running android 4.4 or earlier, you can use a built-in bypass mechanism to unlock your tablet. This was removed in android 5.0 (lollipop). 
[substeps] This method requires that your tablet currently be connected to a wireless network. [title] Tap the forgot pin/pattern/password button.