The touch screen on my phone isn't responding

The screen lock is turned on

Turn off screen lock.

1 of 11 steps Select one of the following options:Turn screen lock on or off, go to 1a.Select time for automatic screen lock, go to 1b.
2 of 11 steps To turn on the screen lock:
3 of 11 steps Briefly press On/Off.To turn off the screen lock:
4 of 11 steps Briefly press On/Off.Slide your finger across the display.
5 of 11 steps Press the menu icon.
6 of 11 steps Press Settings.
7 of 11 steps Press Display.
8 of 11 steps Press Screen timeout.
9 of 11 steps Press the required period.
10 of 11 steps Press the Home key to return to the home screen.