For what it's worth, all android battery drain problems I've had have been solved by keeping wifi / mobile data off unless I'm actually using the internet. It's

For what it's worth, all android battery drain problems I've had have been solved by keeping wifi / mobile data off unless I'm actually using the internet. It's just easier (albeit possibly less satisfying) than identifying & fixing the dozen apps that are each waking the phone every few minutes to check something individually. (Additional benefit: I don't get distracted from work by email/im/facebook notifications).