Those camped out in Puerto Rico or the US Virgin Islands (lucky...) now have yet another wireless plan option courtesy of Sprint, and although that "unlimited" keyword may look enticing, it's enclosed in quotes for a reason. The firm's newest unlimited calling plan was reportedly developed specifically for the Sprint Caribbean market and is available for new and existing customers. The $49.99-per-month plan "includes all local and long distance calls received or generated within the local Puerto Rico and USVI coverage area, as well as long-distance calls from [Sprint] mobile to mobile." Of course, one call to the US mainland, and you'll be hit with a $0.25-per-minute fee as well as an additional $0.69-per-minute if you're roaming, so we'd keep it local if we were you.