travSIM

travSIM launched in 2019 with a focus on unlimited voice, data, and SMS across 160+ destinations. The service uses T-Mobile's network in the USA and partners with local carriers internationally, making it solid for travelers who need to stay connected for both calls and messaging, not just data.

Best for people who want unlimited everything without worrying about separate data caps or roaming charges. The inclusion of unlimited SMS and voice (not just data) sets it apart for travelers who need to stay in regular contact via phone calls or text messages while abroad.