Pressing too hard on Iphone XS Max Screen

iPhones have a feature called 3D Touch, which requires you to press harder into the display, but you shouldn’t have to use any real muscle force.

Pressing to hard on any display can damage it, so please be careful.

Hello,

I would think that the answer would be no. See this:

Get help with the display on your iPhone, iPad, or iPod touch

Good luck.

That would depend on what you mean by "too hard". If you have strong fingers and squeeze it as hard as you can, maybe so. Normal use, probably not.