Why does your iOS device ask for you passcode veery now and then?
If you back up your iOS devices in iTunes, you can see some useful info about them in iTunes: phone number, serial number, etc.
Be very careful if you get an iMessage or SMS like this.
Use one of these methods to transfer a file from your Mac to your iPhone, iPad, or iPod touch.
There’s a simple trick making the rounds that claims to clear out storage on your iOS device. It works, a bit, sometimes…