My Nokia Lumia is frozen on the sleep screen, what do I do?

[Windows Central Question]

nokia lumia phone frozen in sleep screen???

My phone since 1AM this morning has been stuck in the sleep screen. It still shows the time correctly, maybe freezing for a minute or two and still bopping around, but nothing I do wakes it up. If I double tap it it does nothing and when I press the button on the side it does nothing. I had an alarm on and it went off but it still didn't wake up so I had to wait for the alarm to turn off itself. Someone called me and it stayed on the sleep screen as it rang. It still vibrates when I get notifications but still stays on the sleep screen. I've had this phone for two years now and I really hope this isn't permanent. Please help!

 

[Demian Mioc]

Press and hold volume up and power button till your phone shuts down and restarts. It fixes the issue, but why is it happening I simply don't know. Bring your phone to the repair service.

 

[Nicholas Ek]

Re: nokia lumia phone frozen in sleep screen???

Soft reset by pressing and holding both power button and volume-down for 10 seconds.