Cell phone problem?!? please help IF POSSIBLE.?

Question

my bro gave me his black nokia 5200 phone and i acidently clicked a random button and now the screen is all black and i cant do anything. i want to try to turn it off or at least be able to try to call someone with it. can you tell me whats wrong? is it maybe cause i locked it?, if so how do i UNLOCK it? here's how it looks : http://www.welectronics.com/gsm/Nokia/5200_black.jpg

if you have this phone pls tell me how to fix it!

Answer 1

did you get a manual with it??? Take it to your carriers store & ask them!!!  

Answer 2

look online for the user manual (search 'nokia 5200 phone')

actually here's a direct link to the manual

http://nds1.nokia.com/phones/files/guide...

it'll open in a PDF file...

if that doesn't help they usually post customer service information so you can try to contact them.  good luck!