Ohayu eSIM Data Plans for Thailand

Ohayu does not provide a genuinely unlimited data eSIM for Thailand. The plans marketed as “Unlimited” actually offer 3GB per day; once 3GB of high‑speed data is used each day, the speed is throttled to 1000kbps.

Instead, Ohayu sells fixed‑data plans that can be more cost‑effective. Examples include a 50GB plan valid for 90 days at $36.99 USD, a 25GB monthly plan for $49.49 USD, a 20GB plan for 30 days at $17.49 USD, and a 15GB plan for 60 days at $13.99 USD. These plans provide a large amount of high‑speed data without the throttling that applies to the “Unlimited” names.

Ohayu does not provide a Thailand eSIM that includes a phone number or SMS capability. The provider’s Thailand plans are data‑only, so travelers can use the mobile data for internet access but cannot make voice calls or send SMS directly through the eSIM. Instead, VoIP applications such as WhatsApp, Telegram, and iMessage can be used over the data connection for messaging and calling.

Ohayu provides a total of 14 distinct data plans that cover Thailand, divided into 10 single‑country offerings and 4 multi‑country packages. The plans range from $4.99 to $49.49 and provide between 2 GB and 50 GB of data, with validity periods from 5 to 90 days. Among the options, the provider offers both fixed data cap plans—where a set amount of data is allocated for the plan’s duration—and daily data cap plans, which allow a specific daily limit that can be accumulated over the validity period. This mix of offerings gives travelers flexibility whether they prefer a one‑time data allotment or a daily cap that works across multiple days.