How can I unfreeze my Lumia 925?

[Windows Central Question]

my lumia 925 has frozen in lock screen

I did an update an update of skype last night

 

[xandros9]

Press and hold the power and volume down keys for 10-15 seconds, or until the phone vibrates.

although it has been a while since the question was asked..

 

[fitefitness]

Thank you!