ZenSim eSIM Data Plans for Thailand

ZenSim does not provide a truly unlimited data eSIM for Thailand.
All plans that carry the word “Unlimited” in their name are limited to 3 GB per day; after that amount is reached the data speed is throttled, though a specific reduced speed is not listed. For travelers who need more data, ZenSim offers high‑data fixed plans such as 40 GB for 30 days at $51.00 USD or 20 GB for 15 days and 30 days at $24.00 USD and $29.00 USD respectively. Choosing a fixed data plan can be more cost‑effective unless you anticipate using a very large amount of high‑speed data.

ZenSim only offers data‑only eSIM plans for Thailand and does not provide a local phone number or SMS capability. Travelers can still communicate using VoIP services such as WhatsApp, Telegram, or iMessage over the data connection.

ZenSim offers a total of 26 data plans for Thailand, split evenly between single‑country and multi‑country options. There are 13 single‑country plans and 13 multi‑country plans. Prices range from $5 to $70 and data caps vary from 1 GB up to 40 GB with validity periods of 5 to 30 days. Some plans feature a daily data cap—providing a fresh allotment of data each day—while others provide a fixed data amount for the entire validity period. Many of the plans also allow tethering.