
Ohayu is a travel eSIM provider offering mobile data plans for 170+ countries. It connects users to local mobile networks abroad, with supported operators shown on destination and Global plan pages before purchase. Ohayu eSIMs are data-only, so travelers can use mobile internet while keeping their regular number for WhatsApp, Telegram, and other apps. Ohayu has eSIM apps for iOS and Android that let users install eSIMs, manage plans, check data usage, and add more data where top-up is available. Global subscription plans also let unused data roll over to the next billing period while the subscription stays active. Hotspot is supported on Ohayu plans where the device allows it.
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Data plans for this provider are automatically updated. While we strive to keep the information accurate, we cannot guarantee its completeness or accuracy. Please confirm all details on the provider's official website or app before purchasing.
Yes, Ohayu provides unlimited data eSIM plans for South Korea. The plans range in validity from 5 days up to 30 days and are priced between $17.99 USD for the 5‑day option and $58.99 USD for the 30‑day option. Each plan’s normal speed is capped at a maximum of 1000 kbps, and speed may be throttled after extensive use. Ohayu applies a Fair Usage Policy, so users who consume a large amount of data may experience reduced speeds after the threshold is reached. Travelers with concerns about speed restrictions should contact Ohayu directly to confirm whether the Fair Usage Policy applies to their specific use case and to learn the typical data volume that remains at normal speed.
Ohayu does not offer a South Korea eSIM that includes a phone number or SMS capability. The provider only sells data‑only eSIM plans for travel in South Korea and currently does not provide telephony services in that destination.
Because a phone number and SMS are not available, travelers who need to communicate while abroad can rely on popular VoIP applications such as WhatsApp, Telegram, and iMessage, which operate over a data connection and allow voice calls and messaging without a traditional phone number.
Ohayu presents a portfolio of 10 single‑country plans and 4 multi‑country plans for South Korea, with prices shifting from about $8.49 to $66.79 and data limits ranging from 2 GB to unlimited. These offerings include various data structures, some providing a fixed data amount while others may operate on a daily data cap, allowing travelers to choose a plan that fits their usage needs.
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