In the small town where I live, Verizon uses LTE bands 4 and 13. If you're more than about a mile from town center, all coverage is band 13 only. It's easy to check just by installing the 'LTE Discovery' app from the Google Play Store (I don't know if it's available from Apple.)
According to the specs on the manufacturer's website, the OnePlus 5 does not include LTE band 13.
So, before you buy a OnePlus 5, if you're a Verizon customer, be ABSOLUTELY SURE that you won't need LTE Band 13!