e10i service menu
 

Hi Have dificulty to enter service menu in se xperia mini pro,E10i.
Here is the procedure:
How to check lock status in SE xeria phones:
With phone on without sim card
Press 1 time menu button (left button)
Press 2 times back button (right button)
Press 1 time menu button
Press 1 time back button
Press 2 times menu button
Press 1 time back button
Easy way to remember the combination: 1-2-1-1-2-1

I know where left and right :D tried 100 times, no luck phone doesn't go to service menu, I need to check lock status, any one knows what is the problem?

You have to do it on locked screen