Take responsibility for your kid actions and pay the damn bill. Don't just rely on some rule bending just cos you can't be bothered like any other normal parent to take actions prior this sort of things happen and give his kid free access to his bank account and all the stuff and then come on the forums or call a lawyer to fix things when there a hefty bill to be paid.
Do as Stitch suggested make him learn a valuable lesson from his mistake and most importantly make sure there won't be any other incidents like this in the future just like other parents have suggested.
I just love how the German laws can be bended in your case, or at least how a few posters suggested. Since there's no way for the company that issued the bill to actually check who's making the purchases I for one think it's parents duty to take care of this sort of things if they give away the phone or tablet to a kid that's irresponsible, that doesn't care or even doesn't really understand the notion of money and how they come in your bank account or pocket.







