I have a couple of phones, and the iPhone X has by far the worst Wifi connectivity. My Moto X4 and an older iPhone 6 Plus can both connect to WiFi through walls

I have a couple of phones, and the iPhone X has by far the worst Wifi connectivity. My Moto X4 and an older iPhone 6 Plus can both connect to WiFi through walls and other barriers. My iPhone X's loses its WiFi connectivity almost as soon as I leave my room. Even GPS accuracy is unacceptably horrid (making it useless for driving) on the X compared to my old 6 Plus. It's saying something because my iPhone X is the most I've ever spent on a phone. With AppleCare NYC sales tax, the 256GB iPhone X cost me ~$1,450. Approximately what I paid for my MacBook. I don't why the X's connectivity is so poor, buy my best guess is they changed the WiFi/network chip away from Qualcomm.