My camera stopped working in September, no resolution from Google support. This week, while poking around the phone settings, I noticed a flag for Google Play Services under the Security menu. My Pixel 2XL is running the September update for Google Play Services (December patch for Android 10). I went through the update process. After reboot, my handset shows October patch for Google Play Services. Within 80 seconds the handset reboots spontaneously, afterward Google Play Services is back to the September patch. Contacted Pixel support. Repeated process while screen sharing with Google tech three times. Tech stated that it's a glitch, escalated service ticket, and suggested a factory reset. I did the reset. Still can't update Google Play Services and the home screen menu has reverted to the three button layout (Back/Home/App Switcher). Very strange, waiting to hear back from Google.