Hi this is my first post.
My GS2 5 months old working fine got ICS update no issues then all of a sudden battery problems charging done in about 2hrs , then dischargred in about 2hrs also getting message saying unplug charger voltage to high..... but it was unpluged ??? also battery light flashing until battery got below 50% then phone got roasting hot.
I believe this is a firmware update issue so i have sent my phone back to the supplier who have sent it to Samsung,i will update when it returns and what they have done.