[midtownpenguin]

help - full battery this morning - now 26% - and my phone is so hot!

No other apps are running and I had my data service and wifi off.

[slysy]

You could try turning off NFC if you have that enabled

[rcballa12]

When you say "no other apps are running", do you mean that all background tasks are disabled, too?

[midtownpenguin]

I believe so - i have cellular data and wifi off.

[ttxzee]

my phone has NFC enabled on all the time, never had it causing any problems. the only time my phone got really hot was when I was streaming a movie off 4G. make sure no background apps are using your data plan or GPS constantly. also make sure you're in a zone with good cellular connection.

[dgreening]

Is bluetooth on? I hardly ever use bluetooth but I did the other day and listened to music until my headset battery died. I didn't turn off the bluetooth and the next day I noticed the warm phone and the battery was down to 30% after 4 hours of just sitting on my desk. I turned bluetooth off and a soft reset, no issues since.

[cameradork]

Settings>email+accounts. See if any of the accounts are constantly syncing (the account keeps blinking back and forth between white and gray). If so, remove that account and add it back. If it's your MS account, you might have to reset your phone (settings>about>reset your phone). Make sure to back up everything on your phone if this is the case, and it's a good idea to take a screenshot of your homescreen and post it to skydrive so you know how to put everything back the way it was on your homescreen.

This just happened to my wife's 920 - it was the MS account, and resetting fixed it.

[conanheath]

Perform soft reset. Something is hung in processing. Whether an app or sync, something is hung up. I have already gotten in the habit of soft reset when I remove from charger every morning. I shouldn't have to, but I never have a random drain when I do this. I have had 3 or 4 randoms since portico and each time was when I forgot to soft reset.