Help! door wont open!

[billyboy90 s3]

Can some one help me out please. I went to open my door today on my s3 from the inside and nothing happened. Is this a common fault? Really irritating because now I need to put the window down and open the door and u was getting dodgy looks off and old wifey today

 

[waggawagga]

Pull door card off and take a peek.

 

[billyboy90 s3]

Pull door card off and take a peek.

How do you do that lol