Not razor sharp but sharp enough to leave marks on your trousers after some usage. Here is an example:

https://i.imgur.com/HZNUoVd.jpg

The iPhone SE has completely rounded edges which is more pocket friendly in this regard.

You're talking about iPhone SE2, probably. I'm still using original iPhone SE, and its shape is on every pair of jeans I had in those 5 years.

Looks like it gave those jeans some character!