Hello, I just spent 3 months in Yosemite Valley, North Pines Campground and have Verizon and used a We-boost. First, where are you staying in Yosemite? You can get Verizon in the Valley. However with all the visitors using their cells for calls and data, we found regular voice, poor to non existent. Texting works best during the day, voice a litter better at night. We didn't even try our hot spot. There is a public library that has wi-fi. Hope this helps.
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