why cant i get the scren to work

i have the blacberry classic 10 and i cant get the screen to stay on so i can access the functions to make a call. i have rebooted several times. this model doesn't allow you to remove battery

so when you swipe up from the bottom and press the phone icon on the home screen, you don't see the dial pad?

It's a Classic? Have you had this problem before? Have you ever made a call on it?