ZenSim eSIM Data Plans for Singapore

ZenSim does not provide a truly unlimited data eSIM plan for Singapore. The plans that carry “Unlimited” in their names actually limit high‑speed data to 3 GB per day; after the 3‑GB daily allowance is reached, the speed is throttled, although the specific reduced speed is not disclosed.

For travelers who need more data, ZenSim offers fixed‑data plans that may be more cost‑effective. Examples include the Singapore 40GB plan valid for 30 days at $38.00 USD and the Singapore 20GB plan available for 30 days at $21.00 USD. These options provide larger data allowances before any speed reduction occurs.

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.