#5 Drains battery life

Running iOS 7 on a third-generation iPad may drain the battery significantly. It could be same with iPhone 4, 4S, or 5. However it can be fixed by disabling "App Background Refresh." The purpose of this feature is that it keeps apps running in the background and refreshes content. To disable it, go to Settings> General >Background App Refresh and toggle the setting to off.

#4 New Notification Center is crouded

Notification Center gets a huge overhaul and things are pretty different. Now you have notifications from the calendar showing what's coming up, as well as a quick summary of the weather. If you are annoyed by this overcrowded notification, you can get the old Notification Center back. Go to Settings>Notification Center and change a few things around. Turn off the "Today View," "Today Summary," and "Tomorrow Summary." Then set up your notifications for apps as you'd like.

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