My battery life nearly doubled after Amber. I guess skype was draining the phone as hell. Lumia 820.
I honestly think that battery performance has been improved since gdr2/amber.
My 2 year old iPhone 4s gets constantly 48+ hours battery life with around 4 hours of actual usage, with WIFI always on.
Do you guys with the battery life problems suffer from this every day? I get bad battery drain every once in a while, like once or twice a week, but not every day. I don't think there is a specific culprit app wise. I have all services turned on(i.e. nfc, bluetooth, location, xbox, sensitivity, etc...) and use facebook, skype, whatsapp and a host of other battery hogging apps, and I get 20 hours on average.
I haven't read the whole thread but have you turned off "Connect with Xbox Music" and Xbox Music Cloud collection" and "Now playing on Xbox" options? That's what drained the battery for me
I checked and saw that I was signed into facebook all this week! (In the messaging thing)
No wonder I was poisoning my battery to a slow death, did you check that setting?
I have all of them on (+ much more) most of the time and get it to last 18-24h with active use without any problem.-Turned off location
-Tap to send
-Logged out of facebook
-I don't have skype on the phone so I'm not haunted by that problem
I use wifi/3G depending if am in office/home or out on the move, but am always connected.
Don't really expect the 920 to last a week on a single charge, it has a poor battery for its massive hardware, that just does the job ok, and not amazing!
I have no real evidence, but think that strength of radio signal is a big factor in battery life.