I held my phone up lengthwise(end to end) to my eye, and sure enough there was a twist in the chassis.
I put it between my palms and gave a little opposite force to bend back. It didnt take that much surprisingly. Laid my phone on the table and it was dead solid again.
This is kind of worrying since I keep my phone in my front pocket or coat pocket all the time(unless Im sitting and its out on the table). Its not like I sat on it.