Service was spotty but available at the campground for all in our group Wich includes all major carriers. There is actually a pay phone (yes, they still exist!!) At one of the shower houses and emergency phone at ranger station.
I have both & cannot get a signal with either.
No for Verizon and Sprint. I'm assuming T-Mobile would be the same. I did see a sign for an emergency phone by the ranger station.
No signal for T-Mobile.
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