The idea isn't to completely disable everything that makes the iPhone great. Instead, it's to start from a clean slate. This way, you can figure out exactly what has been draining your battery. Follow the tips in this article, and get iPhone battery life back up to where you can get several days of standby, or at least a full day of use out of the phone. Then, once you've established that, gradually turn back on a few of the features you need most.
If, after all is said and done, your iPhone battery is still draining very quickly, then it's likely your iPhone's battery is nearing the end of its useful life. To find out if that's the case, make an appointment with a nearby Apple Store Genius Bar; they'll be able to test it for you.
1. Turn off Background Refresh for apps you don't care about. This keeps the phone active and doing things in the background, including polling the data network, which reduces battery life. Background App Refresh, and either turn it off globally, or deactivate it for certain apps as you see fit.
When you return to the app, it may take a moment longer to bring you new information, but it otherwise shouldn't have any effect on how the app works. 2. Disable as many notifications as possible. I normally leave important ones (such as text and voicemail) intact, but for most apps, you probably don't need the phone waking up and displaying notifications all the time.
Notification Center, scroll down to Include and Do Not Include, tap a given category (Phone, Messages, Reminders) or app (Facebook, Twitter, etc.), and choose as few notifications as possible. The fewer you enable, the more standby time you should see. While you're in there, note that you can change the way each one appears (Alert Style) and whether it shows on the lock screen, as well as disable it entirely.
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