Ohayu eSIM Data Plans for Vietnam

Ohayu does not provide a truly unlimited high‑speed eSIM plan for Vietnam. All plans that include “Unlimited” in the name actually grant 3 GB of high‑speed data per day and then throttle speeds to 1000kbps after the limit is reached. Travelers who need more predictable usage may consider one of Ohayu’s fixed‑data plans, such as the 50GB 90‑day package for $66.79 USD or the 20GB 90‑day package for $28.79 USD. These plans give a set amount of data at full 5G speed without a daily cap, which can be more cost‑efficient for moderate users.

Ohayu does not provide a Vietnam eSIM that includes a phone number or SMS capability. The provider offers only data‑only plans for use in Vietnam. Travelers who need voice or messaging can use popular VoIP applications such as WhatsApp, Telegram or iMessage over the data connection.

Ohayu provides nine single‑country plans and four multi‑country plans in Vietnam. Some plans use a fixed data cap, giving a set amount of data for the validity period, while others use a daily data cap, allowing a maximum per‑day data allowance that accumulates over the plan’s length. Across all plans, prices range from $8.49 to $66.79 and data caps span from 2 GB to 50 GB.