The first couple days the battery life was great. Then one day at work I notices how fast the battery was dropping and at the end of the day it was at 4%! I thought maybe it was because I left it charging over night. And so today, the same thing but it wasn't as bad. It was at like 40% ... usage were cell standby 76%, display 16%, idle 4%. Im thinking it was the cell standby that was draining it so fast. I read that 4G can drain batteries fast as well. Any suggestions or clues?