@denis2, as @RobertQc mentioned you can definitely turn off your data by going into your network settings, and he is right about the apps working in the background that can also be sucking the life out of your battery. But also, what most people tend to forget, is now that you have data, you're just using your phone most likely 2 times more than you ever had. That means the screen light/display is on even that much more and for a longer period of time (i.e. watching Youtube, etc.) so this will definitely drain your battery. I recommend turn down the brightness of your screen display a bit to save a little bit on battery life, it's not going to be a massive help, but it's a little help nonetheless. Also, if you use vibrate all the time, I recommend just going to a ring tone for all your incoming calls,texts, messages, etc. again this switch won't be a massive difference but still a small difference nonetheless. Also if yo have your bluetooth on, suggest only turning it on when you need it, and then turn it off, just like the data. Although all these things will help a little, but collectively it will save you some battery life as well.
But to be honest, you're lucky you only charge it every 2 days, most people have to charge multiple times a day.
