NOKIA 820.
Hi All.
I have had a similar problem with my nokia, 820, I am not exactly sure what I had done,
ie pluged into my laptop, charging, or state of charge, but the phone screen came up with a
"lightning bolt arrow, and a cog wheel" (best description I can give)
No button response, so I removed the back, and battery, waited for about 5 minuets, re assembled, all ok, and has been ok for a week now.
Hope this helps someone.
Ray