I just recently got a phone, I wanted to go easy at first so I got a galaxy s4 and I started getting some problems with the battery, when I use the phone every 2, 3 minutes or so 1 percent of battery drops I looked into settings and it says that the system screen is using 40% and it says 3 hours of onscreen time next is android system using 20% and says could total 1 hour I find myself constantly changing the phone, maybe 3 or 4 times a day, without hardly using it I really need urgent help, I'm not even sure if it's the battery