i phone 4s

You should turn off things like WiFi and GPS when you are not using them, reduce the time before the phone automatically goes into 'sleep' mode and actually turn the thing off when you are not using it (in meetings, cinemas, public transport, while you are sleeping and so on). Smart phones very commonly have a far shorter battery life than a standard mobile phone because they are MUCH more complex systems.

If you want to save battery.. you should turn off..GPS, WIFI, Cellular Data and close all the running application. Plz try to turn on auto brightnes..it can save you more battery...

Sometimes it depends on the applications you are using. Some applications may use more battery power causing the issue.

I have noticed that with any smart phone, if you use it a lot it's battery will drain faster then say you use a regular cellphone a lot. The best thing for you to do is to cut back on using it, and I Am sure you will do this once the "newness" wears off of it. You could also buy a vehicle charger so that you can charge it on the way to work provided you drive to and from.

Maybe due to its applications and features that you need to explore. Indeed it is really a cool phone.I having a hard time to get one here and still in the waiting list.I hope I could get it soon.