I live in zip code 60487, according to sprint's coverage map it's pretty much 100% covered LTE. If you type in that zip code, there is no LTE connection at all from 80th Ave to 94th Ave, and 171st St to 159th (route 6) (forms a huge square of no coverage). I get coverage outside that block, where sensorly shows purple, but that's a very misleading coverage map on sprint's website.