So I have had my iPhone for about two months, the battery is what I have an issue with. My battery usually last only 5 hours for the usage sometimes less. Standby by varies it is usually 12-14 hours I would say. I have location services on but only for the find my iPhone option. Everything in system services is off. My signal is usually 2-3 bars. Wifi signals is usually 2-3 also. On my mail account I have icloud set up but the mail account is inactive so it shouldn't use battery or does it. I cloud backup is off too. Browsing the web using wifi I use it for about 2-4 hours a day. My screen brightness is on half brightness so 50%. Wifi is off everytime I'm done using the Internet. That's is all I can think of.