Planning a trip to Tonga and wondering what is the best way to stay connected? There are a couple different options when traveling to Tonga and I will explain them all in this Tonga sim card guide. Find out where to buy a sim card in Tonga, up to date prices as per March 2023, the best 4G/5G network in Tonga, my recommendation and info about international and e-sim cards for Tonga.