iPad Lock Button image. Once you press the button the iPad will be locked, go into sleep mode, and shut off the screen. To unlock it, simply press the Home button and you will be at the locked screen as shown below. iPad Locked Screen. Once the iPad is locked, you can unlock it by sliding the slider to the right.Once unlocked you will be at your home screen and can start using the iPad. It is also possible to change some settings as to how your iPad locks and whether or not you wish to use a passcode to unlock it.To access these settings, tap on the Settings app.Once in the Settings app, and in the General category, tap on the Auto-Lock option.t is also possible to change some settings as to how your iPad locks and whether or not you wish to use a passcode to unlock it. To access these settings, tap on the Settings app. Once in the Settings app, and in the General category, tap on the Auto-Lock option.