My iPhone X w/no casing fell at about 4ft high onto a wooden floor. No cracks or scratches on the phone. But could there be internal damages?

My iPhone X w/no casing fell at about 4ft high onto a wooden floor. No cracks or scratches on the phone. But could there be internal damages?

Does it work? If no then there's damage. If yes then most likely no damage.

Aside from glass screens, they're pretty durable. Most stuff is steady state and not that fragile.

Possible, but if everything seems to be fine then count yourself lucky.

Most Likely not. Damaging the internals without any external damage is very unique, unless liquid is involved

Can there be internal damage from a drop? Yes. If the phone works, you have nothing to worry about.