Ohayu eSIM Data Plans for Vietnam

Yes, Ohayu offers unlimited data eSIM plans for Vietnam. The unlimited plans come in 5‑day, 10‑day, and 15‑day variants priced at $17.99, $33.99, and $41.99 USD respectively. All plans are 5G and allow tethering, with a normal speed cap of 1000kbps that may be throttled if a Fair Usage Policy is triggered.

Because speeds can be reduced after heavy usage, travelers who need consistent performance should confirm with Ohayu the typical data available at normal speed and whether a Fair Usage Policy applies.

Ohayu does not provide eSIM plans for Vietnam that include a local phone number or SMS capability. Travelers can only purchase data‑only plans from this provider. They can still use popular VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection for voice and text, but some destinations may block or restrict access to certain apps or VoIP services, so it is advisable to confirm that the services you rely on are available in Vietnam before making a purchase.

Ohayu provides 9 single‑country data plans and 4 multi‑country data plans for Vietnam, totaling 13 different options. The plans run from $8.49 to $66.79 and cover data ranges from 2 GB to unlimited, with validity periods spanning 5 to 90 days. All plans feature fixed data amounts—there are no daily data caps—tethering is allowed, and speeds may be throttled to a maximum of 1000 kbps when reduced.