Haha...perfect. yes indeed, i can also reproduce this bug.
Write to apple support about it, i'll do it too.
verizon iphone 5 with ios 6.0.2
I don't know yet how to get back the normal function. I'll try to do a force reset or connect to itunes and see. It seems the phone is still working correctly in the background. I can put the microphone and listen to music or use siri. Its just that the screen is blank like yours. Must be a bug in springboard.
aah got it... use siri, do something like "search the web for google" and it'll open up safari, which will not be visible. not you can press the home button and everything will be ok.
Currently Being ModeratedJan 3, 2013 3:43 PM (in response to electronicsguy)
Ah, very nice suggestion.
My method was to call myself with another phone.
After answering it, I can press the home button to go back home, then launch phone and end the call.
It seems your method will not require a second phone.