ZenSim eSIM Data Plans for Southeast Asia

ZenSim does not provide a truly unlimited data eSIM for Southeast Asia. The plans labeled “Unlimited” actually give 3 GB per day for 10 days or 30 days, after which a reduced speed is applied, though the exact throttled rate is not listed. Travelers who need larger data allowances can choose ZenSim’s fixed‑data plans, such as the Asia+ 20GB for 10 days or 30 days, which offer 20 GB of high‑speed data during the validity period. Fixed‑data plans can be more cost‑effective for users who consume a lot of data.

ZenSim does not provide an eSIM plan for Southeast Asia that includes a phone number or SMS capability. The provider offers only data‑only eSIMs for this region, so travelers must use data‑based messaging and voice applications such as WhatsApp, Telegram, or iMessage to make calls and send messages over the network.

ZenSim’s Asia+ plan covers Indonesia, Malaysia, Philippines, Singapore, Thailand and Vietnam in Southeast Asia. The same plan also provides coverage in additional regions, but those areas lie outside of Southeast Asia.