[Jtsummers]

Eh. I (until recently) weighed around 220lbs. I would not have been surprised if any phone I sat on [0] broke or was otherwise damaged. Especially with the way that anything in a back pocket gets flexed. It's not just the weight placed on it, it's the tension from conforming to the shape of your body along with the pants. I guess if I had no ass, or weighed much less, or like some coworkers wear pants so low that the back pocket is actually behind the thigh it might not be a big deal.

[0] This also depends on the seat. My couch at home is very cushy, it'd be hard to break it there. But my kitchen table chair is little more than a slat of wood cut to a comfortable shape.