Below is from the Verizon web site, which explains a potential GPS problem. Apparently, this is associated with the GPS week number roll over that took place this past April. Also, here is a link that goes into a more detailed explanation and lists phones that may be affected. Homeland Security has information here, too.

I have a Galaxy S5 and it's affected. Hey, Guthook! Are you listening? Will this affect your app?
"Starting November 3, 2019, for specific devices sold between 2006 and 2016, users may experience Global Positioning System (GPS) location-related issues due to the GPS Week Number Rollover. Voice, text and data services will not be impacted by this rollover.GPS accuracy may impact the performance of navigation applications used on these devices."