ZenSim eSIM Data Plans for Thailand

ZenSim does not provide a true unlimited data eSIM for Thailand. The plans labeled “Thailand Unlimited STANDARD” give 3 GB of high‑speed data each day for a set number of days, after which the speed is throttled to 1000 kbps. If a traveler needs a larger unthrottled data allowance, fixed data bundles are available, such as the Thailand 40 GB for 30 days or the Thailand 20 GB for 15 days, each with a set validity period.

ZenSim does not provide eSIM plans for Thailand that include a phone number or SMS capability; the provider offers only data‑only eSIMs in that destination. Travelers who need to make calls or send text messages can use VoIP apps such as WhatsApp, Telegram, or iMessage over the data connection, but they should verify that the apps they rely on are accessible in Thailand before purchasing.

ZenSim offers a total of 31 data plans in Thailand, comprising 13 single‑country plans and 18 multi‑country plans. The provider offers two main types of data caps: fixed‑data plans with a set amount of traffic (ranging from 1 GB to 40 GB) and daily‑cap plans that limit usage each day. The price range for these plans runs from about $5 to $119, while validity periods vary from 5 to 90 days.