I have owned my Nokia Lumia 920 less than a week(purchased on 1/18/13). This morning i woke up and realised that my phone was not functional. The screen remained black no matter what buttons i pressed. After hard resetting the device i was able to get it to reboot and the phone began to work like normal.
I normally charge the phone on the Wireless charging base while i sleep.
I love my new phone, but i depend on the Alarms i set to wake me up for work.
I hope Nokia developers read this because, my job depends on my phone.
Have been some reports just using mains charger can elicit this result, so may not be related to wireless charging, although Accessories app. was updated again fairly recently.
Symbian specialist until 31/01/2013 with interests in Maemo & MeeGo but an aversion to Windows!