I recently updated the roaming (PRL?) software on my four Sprint phones in hopes of getting better coverage in the hilly area where I live. I was told recently that Sprint phones can roam on the VZW network. Is that correct? In theory, that would give me the same coverage as VZW without paying the Verizon premium. Particularly interested in coverage in rural Tennessee, where VZW shows full digital coverage and Sprint lists "roaming" partner. Would I be able to access the VZW network in those cases? Appreciate the feedback!