iphone durability

I recently noticed when I was cleaning the screen of my phone to replace the protector that when I press a little harder on that area of the screen (see picture) I hear a very soft popping sound. It sounds a little strange. Does anyone have something similar? I had spoken to a technician because...

After watching many videos, I found out that the iPhone 15 pro is made with a grade 5 titanium frame, but is it really that strong? Many videos on YouTube that the iPhone 15 pro max is not as strong as the 15 pro with a bend test. I also reviewed comments of people who notice a slight bend in...