A software update was pushed to my phone in July, and since then the Android system is using more than half of my battery. When I first got the phone the Android system used around 20-23% and now it is using 49-58% of my battery. When I select the graph view I see my Mobile Network Signal is brown all the way through. I am in Lincoln, NE. My roommate has the same phone, we live in the same place and he does not have these issues. What can I do to help this?