Cell Coverage Maps Lied and My Closing Nearly Collapsed

Everyone told me to check the carrier coverage maps before buying remote land. I did. Three carriers all showed solid signal on that 40-acre parcel in the Bitterroot foothills. I bought it partly for that reason — figured I could work remotely a few months a year. Not a single bar on any of them once I was on the ground. Topography kills those maps dead. A ridge a quarter mile away blocked everything. The coverage polygons are modeled from tower placement, not actual terrain propagation. They are essentially fiction in complex terrain. The fix is embarrassingly simple: visit the property with your actual phone, walk every corner, and call someone. Do it in multiple spots and multiple weather conditions if you can. No map replaces a site test. I've talked to at least a dozen buyers since who made the same mistake and got the same surprise. Carriers have no legal obligation to make those maps accurate. Anyone else bought land where the coverage map was flat-out wrong, or found a region where one carrier's terrain modeling is noticeably better than the others?