Its really hard to separate 8.1 and Cortana, but how has people's battery usage been in 8.1 with Cortana? Right now, its not so pritty for me. On my 925, going into lunch I typically had 75-80% left in the tank. Today its at 60! I just disabled Facebook from my background, and its still dropping like a rock. I will try and disable Cortana next, but anyone contribute extra battery drain due to Cort, or is it just 8.1 in general?
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