You don't; I've tried. These things are bloody durable.

[Once he realized there wasn't a way to shut the thing up via the app itself, he'd tried to smash the tablet.

Obviously, it hadn't worked.]

Just wait, it gets better. Soon it will be delving into your personal life.

[Harry's own tablet has spent the last hour reciting every single perceived failure of his lifetime, many of which he'd forgotten. Had he remembered the time he'd pulled the wings off a butterfly as a child? No? Well he damn well does now.]