trifa offers 25 single‑country data plans for Vietnam and does not provide any multi‑country options. The plans vary widely: data caps range from 1 GB to more than 100 GB, while prices cover a spectrum from about $4.30 up to around $100, giving users choices between low‑cost, short‑term packages and higher‑budget, longer‑duration bundles. Tethering is allowed on these plans for users who want to share the connection with other devices.