Ok, 3 things.
1) I'd be paying the bill every time unless...
2) Every time that was done I instead DESTROYED my phone so that I couldn't use it
3) If I did put it on top of the other phone with the Nokia Lumia 920 I'm getting I would need to replace everyone else's phones because putting the Nokia Lumia 920 on top of them would destroy all of them
Ok, do you honestly think you'd get to avoid paying the bill if you went out for a meal with friends and this rule was in force?