So, you will conserve on iOS 7 the battery of your iPhone

Some iOS 7 Features - such as automatic App Updates - turn out to be power hogs. Tips to help you conserve the iPhone battery yet, read here.

Data transfer, Wi-Fi, Hotspot and Bluetooth: battery-disable-eater

First, launch the settings App. Follow then instructions below step by step. What is the function of a switch on or off, remains up to you.

Wi-Fi: on-the-Go, it is recommended to turn the wifi off. This saves power and also protects your privacy.
Bluetooth: Turn off Bluetooth on-the-go, when you need it, for example, only for your speakers at home.
Mobile network: Probably one of the biggest power guzzlers: mobile data. This allows you to disable the menu item "Mobile network" - either in General or on a per-App basis.
Personal HotSpot: If you need to just ask your seat neighbor or Laptop no Internet connection is available, can you keep this function deactivated.

First go to the menu "General". Under "background app refresh" allows you to disable all the Apps that don't need to stay in the Background currently. Also worth Considering: the function "Auto-lock". Let your iPhone Often unattended, do not recommend this Option only in order to save power. This allows you to increase the security, unless you have set a PIN.
Back on the home screen, the settings you see below the item "Wallpapers & brightness". Activate the function "Auto-brightness". Thanks to the Front camera, the iPhone automatically detects how bright it is in a room. This Option is reduced, for example, in a dark room the brightness. As a result, the Display is not always on maximum performance - also saves battery power.
In the sub-menu "privacy" in the settings, you should turn off all unnecessary location services. This not only saves electricity, but sammlerei also avoids unnecessary Data.
In the end, you should make sure the "iTunes & App Store". Here, you should leave the function "Mobile data" turned off. Otherwise, among other things, the App will load Updates via the mobile network.
Additional power saving tips for iOS 7 you will also find in this tip.

Little tip: if you Want to charge your iPhone as quickly as possible, it is recommended to do this in flight mode.