GulfData’s “Vietnam Unlimited” plans are not truly unlimited. Each of those plans provides 1GB of high‑speed data per day and shifts to a reduced speed of 512 kbps after that allotment is used. Because the high‑speed data is capped at 1 GB each day, GulfData does not offer a plan with unlimited high‑speed data for Vietnam.
Instead, GulfData offers fixed data plans for travelers who want a larger data allowance. For example, a 50GB plan valid for 180 days costs $81.00 USD, and a 20GB plan valid for 30 days is $25.50 USD. These plans give a set amount of high‑speed data that must be used within the stated validity window, and can be more cost‑effective for most users.