Having an unlocked phone enables you to buy a sim card in each country and have a local number and local phone service. In Panama City I met the bright, personable, amd trustworthy Karol. Karol was headed up to Costa Rica so I gave her my CR sim card.
Service with CR’s ICE is so inexpensive that I had plenty of service left on the card and it might come in handy for her. I insisted she take it. A few weeks later she returned — with stories of how that sim helped make her trip a great one.
This is Karol’s short version of her story, which she called a butterfly effect.