1. You don't limit your location services. Go to Settings > Privacy > Location Services Here you will find all apps that use GPS t...
1. You don't limit your location services.
Go to Settings > Privacy > Location Services
Here you will find all apps that use GPS to determine your location. This makes sense for some apps, such as Find My iPhone, but you'll certainly find some apps there that work just as well without location service and drain your battery unnecessarily.
2. You are synchronizing data too often.
Settings > Mail, Contacts, Calendars > Data synchronization
Every time your iPhone checks your email or checks for updates to your calendar and contacts, it drains your battery. It is usually sufficient to increase the time interval or, best of all, to call up the updates manually.
3. You don't close or delete apps you don't need.
Many do not even know that the apps that are called up when pressing the home button are not closed properly. Double-click the Home button and slide up the displayed apps that you want to close.
And if you don't use apps anymore, just delete them. Hold your finger on the app until it starts to shake and click the cross at the top left to delete it.
4. You have the parallax effect running.
Settings > General > Accessibility > Reduce Motion
With the parallax effect from iOS7, the background image is animated and is constantly in motion. Looks nice, but costs a battery charge.
5. Your screen is too bright.
Settings > Backgrounds & Brightness
Here you can turn down the brightness a bit by moving the slider to the left. You can also turn off auto-brightness at the same time.
You can also quickly adjust the brightness by swiping up Control Center from the bottom edge of your iPhone.
6. You are not using Airplane mode.
When you're not using the Internet and you're in an area where the network is poor, your iPhone keeps searching for the signal to connect. To stop this, simply slide up the control center and switch to airplane mode.
Part 2 with even more tips to save your iPhone battery can be found here.