In case you just upgraded your iOS powered device to iO7 or any other version and now this device runs slower than it used to, this resetting of the device procedure might speed things up.
With time it can happen you have a bunch of installed apps on your Windows Phone 8 powered phone you never use anymore, I suggest you to remove them to free some of the storage.
You can organize your apps in so called folders on your Nexus 4. For instance you can put all your games into a games folder and this is how you do it.
You can easily copy any text on a website and then paste it to anywhere you like on your iPhone or iPad iOS powered device. I will show you on a website to email example.