The phone is "trying to shap itself to the curvature of [your] leg." Shape ITSELF. That's really your position here? And you expect anyone to take that seriously??
If you really can't figure out what I mean, I'll break it down Barney style to you.
The pants stretch over the phone and since the phone is a straight piece of metal and my leg is curved, the pants (when tightnened from sitting down) cause pressure to the phone. The phone has nowhere to go except to be pushed into my leg. Have you never tried wrapping something that is flat and bendable to something that is curved?
I thought you could figure it out on your own, but I guess you can't.
I'm not saying that it warps within minutes of being in my pocket, but days and weeks of putting light pressure on it in the same spot, the phone eventually starts to gradually shape to my leg EVER SO SLIGHTLY.
It's only a couple of thousands of an inch warped, but that doesn't change the fact that it IS warped. Do you get it now?
Sitting still on a desk doesn't change the shape. Holding it lightly doesn't change the shape. Being in a pocket with light pressure on it against a rounded surface is the only way that MY iPhone could be getting twisted.