4S eSIM eSIM Data Plans for Thailand

4S eSIM does not provide a truly unlimited data eSIM for Thailand. The plans that carry the word “Unlimited” in their names are actually fixed‑data plans with a specified data cap and a reduced speed after that amount is consumed; the Data cap field of each plan shows amounts such as 3GB, 5GB, 10GB, 20GB, 30GB, 50GB, etc. For instance, the Thailand 50GB plan is valid for 5 days, 7 days, 15 days or 30 days, while the Thailand 30GB plan can be purchased for 15 days or 30 days, each offering a set daily data allowance that is divided over the validity period.

Because of this, travelers looking for a large data allowance should consider these fixed data plans. They can be more cost‑effective unless a user needs a fully unlimited data experience. Examples include the Thailand 50GB plan, the Thailand 30GB plan, and the Thailand 20GB plan, all of which provide extensive data volumes for a set validity period.

4S eSIM does not offer a Thailand eSIM that includes a phone number or SMS capability. Travelers can purchase a data‑only plan and use VoIP services such as WhatsApp, Telegram, or iMessage over the data connection for calls and messaging. However, some destinations block or restrict access to certain apps or services, so users should confirm that the specific apps they rely on are accessible in Thailand before purchasing.

4S eSIM offers 57 single‑country data plans that cover Thailand only, and an additional 108 multi‑country plans that include Thailand as one of many destinations. Of the total plans, 39 provide a daily data cap and 126 offer a fixed data quantity per validity period. Prices span from about $1.43 to $163.19, while data caps run from 714 MB up to 50 GB. Daily‑cap plans reset the data allowance each day, giving a predictable daily volume, whereas fixed‑cap plans allocate a set amount for the whole validity period. This range lets travelers choose from a variety of durations, data amounts, and cost points.