Just updated to iOS 7 on your iPhone 5, iPhone 4S, iPad 4 or other older iOS devices? Stuck with current devices, which are acting a bit sluggish after upgrading to iOS 7? Good news is that there are a few things you can do to improve an old iOS device’s performance somewhat.
Clear up iDevice, Keep Only Needed Apps
Deleting unnecessary apps could help you save a lot of space on iPhone, iPad or iPod. If your device’s hard drive is near capacity, reducing the amount of data stored on it could result in a speed boost.
You can check how much free space you have, go to Settings > General > Usage. We’d suggest keeping at least 1GB free just to make sure there’s some free space for iOS to shunt files around without having to do too much juggling. To delete an app, find it, tap and hold until it starts wiggling, and tap the X in the upper-left corner.
Also, you can delete unwanted photos which takes up a large number of space on iDevices. If you accidently deleted the wrong photos, use iTunes Data Recovery to restore the deleted photos.
Stop Background Update
iOS 7 runs more processes in the background to make it more convenient to use. For starters, apps now update by themselves in the background, which saves you the trouble of updating your apps manually.
Turn off Automatic Updates: Tap Settings > iTunes & App Store > and turn Updates off. If you spend a lot of time uploading Music, Apps and Books you might want to turn off those as well.
Turn off Background App Refresh: Tap Settings > General > Background App Refresh. Turn Background App Refresh off and tap Disable Background App Refresh.
Turn Off Motion, Transparency, and Other Effects
iOS 7 introduced new animations, which quickly lose their luster when they result in a choppy motions and lag. you can turn them down if this setting is available your device. For instance, iPad 2 supports this motion effect but iPhone 4S doesn’t.
Turn off Motion: Tap on Settings > General > Accessibility > Reduce Motion and set Reduce Motion to On. This turns off the parallax effect of icons and alerts (many people find it easier to use in this setting).
Hopefully these tips could help your device run faster after iOS 7. If you have other problems after updating iOS 7, such as battery drain, check How to Fix iOS 7 Battery Drain