womb raider
Android Enthusiast
You must not have anything sync'ing at all while you're at work or have your phone on airplane mode. I have no clue how you only get a 5-10% drain during a full days work, without using the phone.
You're right. The signal is very bad where I work so I turn mobile data off and have wifi off (unless I'm using it very briefly). I don't put Airplane mode on tho, as I'm usually able to receive calls/texts with the little bit of signal I get.