The iOS notification centre is barebones when compared to its Android counterpart. The metallic grey background looks bare and the options are fairly limited. In Android, users can access all connectivity options (WiFi, Bluetooth, GPS, etc). In iOS, these options require multiple taps and swipes. These options are basic and should be accessible from the notification centre. A jailbreak was released for latest version of the OS (iOS 6.1) by evasi0n, who claimed that at least 7 million people installed it in four days. Jailbreak gives users more freedom to tweak iOS. NCSettings is a popular app that makes the iOS notification centre user-friendly. Try it if you have jailbroken your iPhone.
Restrictions on third-party apps
Apple is committed to making the OS secure. This means that sharing between third-party apps is restricted. For instance, you open a webpage in Safari and want to share it with a WhatsApp contact. There is no way to do this apart from the cumbersome copy-paste. In Android, you can share URLs from any browser to most apps. Apple allows sharing with selected apps, like Facebook and Twitter. It might be enough for most users, it is not always convenient. You cannot set any app as the default keyboard on iOS either. In Android, you can pick from many excellent keyboard apps like Swype or Swiftkey, while you'll have to manually set these as your input method everytime in iOS.
Multi-tasking is not the