It's awful not even one bar most of the time, it looses connection and goes into emergency call only mode quite frequently. I know that will cause drain but will have to do until I move house.
Also when I use WiFi and go into work, there's no WiFi and I'm back on HSDPA. I switch WiFi off but often get a deleted_wakelocks which run wild or other WiFi wakelocks. So I have to reboot the phone to get rid of these wakelocks, don't know if that's normal or not? Doesn't always happen just sometimes.
Thanks
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From the stats,bad signal is the cause of the battery drain.
'deleted_wakelocks' is a kernel wakelock.Changing Kernel/ROM should fix the issue.Nothing can be done manually to fix it.
For more info on deleted_wakelocks,refer this.
Tapped from my furious dogo