Well my screen cracked yesterday in two spots while in my front pocket yesterday. The screen is always facing in and was in a case and there is no physical damage at all to my phone besides the screen now.
It's never been dropped either. The only thing I can think of is that I bent over and maybe it got a little too tight for it. And no I don't wear skinny jeans, boot cut at work.
My phone has a slight bend in it as well. Taking it to Apple Store tomorrow hoping they will swap since it's obvious there was no physical damage done to it.
Also I've never had a broke screen before either but you cannot feel the marks at all, is that normal? I can psychically see the crack but not feel it.