Merciless freeze on unlock

[ArdevDE]

My Lumia 920 just froze as I tried to enter my unlock-code.
Nothing works, I can just feel the vibration when I press the back, windows and search button. But that's it.

What can I do?

 

[JConn_Lefty]

i would recommend trying out the "soft" reset by holding the volume down and power button together for about 10 sec. that should shut the phone down and restart.

some have stated that the method above doesn't work and if that's the case, you might wanna try doing the "hard" reset by holding down volume down, power, and camera button. but i think this will erase all info in your phone. i never had to do a hard reset before. i did soft reset plenty of times due to the fact that my phone freezes ever so often...

btw, is this on an att lumia 920?