Q: Why does caller ID face a few-second delay while receiving calls?
Drop the resolution down to FHD+ for now till the next update gets pushed out. This specific model has issues with this specific update.
Settings > Apps & notifications > Default apps.
Mmm, nope. I think that's just a generic support link for OnePlus phones using Verizon's network. If you're having issues, contact Total Wireless and...
Do you have any reminder/health apps installed?