Yes, iPhone X does support wireless mirror screening. Check this video to understand how to connect your iPhone X with your TV.
Yes, iPhone X is a water-resistant phone. You can check this video to know more about it. However, we must tell you that Apple does not serve warranty if your phone is extremely damaged by water.
The iPhone X was a huge gamble from Apple, yet one that really paid off six months into our testing. Losing the home button and altering the design was a dangerous move, but one that was sorely needed after years of similarity and the premium design, extra power, all-screen front mix together to create - by far - the best iPhone Apple's ever made.
If you’re an Apple fan, this is the phone to buy. We can’t peel our eyes away from the gorgeous OLED screen, and using gestures to move around iOS is pure bliss.