ZenSim eSIM Data Plans for Singapore

ZenSim does not offer a truly unlimited data eSIM for Singapore. The plans branded as “Unlimited” actually provide a maximum data usage of 3GB per day; after the limit is reached high‑speed data is reduced, although the specific throttled speed is not listed in the public information.

Instead, ZenSim sells fixed‑data plans that can be more economical for most travelers. For example, the Singapore 40GB plan is valid for 30 days and costs $38.00 USD, and the Singapore 20GB plan is available for 15 or 30 days at $18.00 and $21.00 USD respectively. These higher‑allowance plans give a predictable amount of high‑speed data without the daily cap that comes with the “Unlimited” branded options.

ZenSim does not offer eSIM plans that include a local Singapore phone number or SMS capability. The provider offers only data‑only eSIMs for the region, and travelers can use VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection to make calls and send messages without needing a local phone number.

ZenSim offers 13 single‑country plans that cover Singapore and an additional 13 multi‑country plans that include Singapore. The available data plans vary from $5 to $70 USD and from 1 GB to 40 GB of data. Some plans provide a fixed data amount for the entire validity, while others offer a daily data cap. Tethering is allowed on all plans.