Mint Mobile looks much, much cheaper than Verizon, but US Mobile may be even cheaper--and the "carrier-switching" feature looks interesting. We live in the boonies, surrounded by other boonies, so the idea that we could possibly "switch" (right from phone settings) to whichever carrier has the strongest signal is intriguing. I mean, the idea of paying $15/mo sounds incredible. To add a third line to our current unlimited plan with verizon was like $75 (😵).