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1-
Turn off AirDrop except when needed
AirDrop is now available for iPhone 5, 5s, and 5c devices
running iOS 7, allowing you to share files and photos with friends and
colleagues over the air when they are in close proximity. But its use
can take a heavy toll on your battery, particularly when AirDrop is in
"discoverable" mode.
Simply swipe up from your home screen to bring up the
Control Center, then tap
AirDrop. Select
Off when you're not using it.
2-
Limit apps from churning up data, power in the background
You can now limit which dormant apps download data, and
therefore consume power, in the background. For instance, while it may
be useful for a mapping app to provide you with up-to-the-minute
turn-by-turn directions on the road, you may not want other apps, such
as the Stocks app, to update if you're not particularly interested in
the financial market.
To change this setting, tap through to
Settings >
General >
Background App Refresh, then deselect apps that you do not want to update in the background when they're not in use.
Disable auto app updates; manually update at your convenience
iOS 7 will now update your apps and music in the background.
If you're connected to Wi-Fi networks (or the cellular network), your
apps will remain up to date without bugging you. But this consumes data
and power, and should be restricted for when you're free to plug in your
iPhone to charge.
Tap the
Settings icon, scroll down to
iTunes & App Store and turn off the
Updates and
Apps settings. Another quick power (and data) saving tip: You can allow updates when you're on Wi-Fi only by deselecting
Use Cellular Data at the same time.
Block persistent callers from contacting you
Calls significantly drain your battery meter, even if you
don't pick up incoming calls. If you get the same persistent person
calling, you can now block them from reaching you.
To do this, head back to
Settings and scroll down to
Phone. Scroll down further to
Blocked and
select the contacts you wish to automatically refuse access. While this
feature blocks the call coming through, it doesn't prevent the caller
from leaving you a voicemail.
Prevent your iPhone from 'learning' your frequent locations
Your iOS 7-powered iPhone from the get-go records where you
go so it can pick out nuggets of information that may help you,
particularly if you visit those places regularly. It updates the Today
section in your notification center, and can give you estimated times of
arrival to your destinations. While it's a handy feature, it is far
from absolutely necessary, and can be turned off to save some valuable
battery.
Buried deep down in the device's settings, you have to navigate to
Settings >
Privacy >
Location Services >
System Services, then switch off the
Frequent Locations option. You can also delete any data already collected by tapping
Clear History at the bottom of the screen.
Turn off 'parallax' motion user interface
If you slowly jiggle your iPhone in your hand, you may notice
the "parallax" effect of three-dimensional icons sitting on top of your
wallpaper. This effect uses internal hardware to sense the direction,
speed, and motion of your movements. This, as you might expect, will
drain the battery. Though flashy and visually quite cool, it's not
wholly necessary if you're a power user.
To disable the "moving wallpaper" feature, head to
Settings >
General >
Accessibility >
Reduce Motion, then flick the switch in the
on position.
Source : http://www.zdnet.com/how-to-improve-your-iphones-battery-life-updated-for-ios7_p7-7000014902/#photo