I had Verizon for years, but early this year I switched to AT&T and I have found the service in the parks is definitely better with AT&T. I haven't found a dead zone yet and get service even in the cues for Guardians, Soarin', Indy, (never tried on HM) and other spots I used to never be able to connect (by the bathrooms in Adventureland was a prior dead zone for me). I will echo the prior poster's experience that at home my service is not as good. There are several stores and places that I used to get service at just fine, that are now total dead zones (so much so that I use my Verizon work cell as a hot spot sometimes to access my personal phone's apps and such). You really can't win...