How to disable pin security from Samsing Tab 2 I have a Samsung tab2, and have added screen pin lock on my Tab few days back as I was going out. Now I don't want to use pin lock as security, but I am not able to disable it. I am going to 

setting --&gt; security --&gt; screen lock


After entering my pin my options are to disable includes last the option None.

What should I do to remove the screen lock pin??
In my case, I installed my own certificate which even on removing was some where present don't know where so ultimately I cleared up every thing and again tried to remove pin and it got removed. 

Proper way would be settings-->security-->clear credential Clear credentials is last option under security heading.

And now u can change your pin  setting-->security-->screen lock-->swipe/none whatever you feel comfortable with.

Enjoy :D