re: iPhone 4S: 4 Fastest Ways To Drain Battery
Another thing is not turning off apps. I bought an app called TomTom, and it really needs a car charger or the TomTom Car Kit, which is worth it because then you can place your iPhone on your windshield, and the car kit keeps it charged. The car kit is a small investment, but worth it for this app.
TomTom is a GPS program, that leaves the screen on, and also downloads map updates like real-time traffic reports, and user-submitted updates of areas under construction. It's extremely useful!
However, if you don't turn the TomTom app off when you exit your car, you'll only a few hours battery life because it downloads updates, leaves the GPS enabled, and will also talks to you when you need to make a turn on a street corner. It even says the name of the street you should turn onto. I once left the app running while in a meeting, and during the conference call, with TomTom in my pocket, it told me to take a turn onto Sunset Blvd. Whoops!
The app is reasonable too- I think it was around $50.00, it's much easier and useful than a stand-alone GPS, and with the always-updating maps and traffic, it's extremely easy to use.
That said, new owners of iPhones should also learn how to turn apps off because the iPhone Multitasks, and apps will stay running.
Here's how to accomplish this:
Press the menu key (the only button on the iPhone) twice (like your double-clicking a mouse) and then touch (and hold) an app's icon for about 3 seconds. Once the icons start jiggling, touch the red circle in the top left corner. This will kill the app, instead of your battery.