my iphone x keeps turning off the WiFi and I cannot get any connectivity to internet

If you have a case on your iPhone, remove it and test the device.

Settings>General>Reset>Reset Network Settings, keeping in mind that this operation resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before, but nothing else.

When done, restart your iPX, then test it.

If you get no help, since your device is still on warranty, I would have it inspected at your most convenient Apple Store or Authorized Service Provider: Apple - Find Locations - Location Selector

Regards

Giulio

Hi

Turn off your router for 20 /30 seconds when it's back on go to settings on iPhone down to reset Reset network settings After reset enter your router wireless key.

Cheers

Brian 🇬-1F1E7;