Cell phone coverage

What cell carrier has the best coverage at wdw? I know that ATT is the WiFi sponsor but in my area of the counry Verizon has the best coverage. Or is it that no one carrier has the best coverage.

AT&T has the best data coverage but Verizon works just fine for voice calls.

Thanks @Camsdad

I had no problems with Verizon's data coverage at WDW. Supposedly AT&T was able to put cells in the park as part of their sponsorship deal, but I have not seen anything official about this nor have I seen any quantitative data about cell reception in the parks by carrier.

Good coverage w ATT except in some rooms.

I've had generally very good coverage with AT&T for voice, text, and data in the parks. Some resort areas can be a bit hit-or-miss at times.