Written by Inbox eSIM, which sells eSIMs too. ZenSim’s prices are read from zensim.com and each links to its page there. Its rules below were read on its own pages on 2026-11-07, each with its source. How we compare.
- App or account
- Buy on the website, then scan the QR code sent by email or install in the ZenSim app; the pages read do not say whether an account is needed. source
- Delivery
- QR code emailed, or install through the ZenSim app; the settings to change on arrival are emailed too. source
- Refunds
- No data used and bought within the last 6 months: full refund even if installed, to the original payment method, usually in 1 to 3 days and up to 10 business days. source
- Top-ups
- Yes: in the ZenSim app, add another plan for any country to the same eSIM, at 10% off the normal price. source
- When the days start
- Its Japan page says installing early does not start the plan, which activates automatically on arrival in Japan, and the eSIM can be installed up to 90 days before departure. source
- Hotspot
- Its travel eSIMs page lists unlimited hotspotting as a feature, and its Japan page says unlimited hotspotting is built in for the whole trip. source
- Support
- Its help page offers chat on WhatsApp and Messenger and email, and says the team is online more or less all the time. source
- Refund window
- 180 days for an unused eSIM, as its own pages state. source
Seller check
ZenSim has not been checked by hand yet; what we read automatically is below. The rule.
5 GB for a month, country by country
ZenSim’s cheapest 5 GB lasting 30 days or more, against every brand we read in the same country.
| Country | Middle price | Cheapest | Rank | |
|---|---|---|---|---|
| Albania | $15.00 | $8.99 | $3.45 | 64 of 71 |
| Argentina | $23.00 | $14.99 | $7.00 | 70 of 76 |
| Australia | $11.00 | $7.17 | $3.00 | 70 of 77 |
| Austria | $12.00 | $5.99 | $1.60 | 73 of 75 |
| Azerbaijan | $18.00 | $15.00 | $6.62 | 51 of 70 |
| Bahrain | $24.00 | $12.99 | $5.84 | 66 of 69 |
| Belgium | $12.00 | $5.99 | $2.29 | 70 of 72 |
| Bhutan | $71.00 | $21.63 | $8.27 | 51 of 52 |
| Bosnia and Herzegovina | $24.00 | $12.58 | $5.52 | 65 of 66 |
| Brazil | $18.00 | $12.66 | $3.59 | 70 of 76 |
| Cambodia | $18.00 | $9.74 | $5.43 | 63 of 73 |
| Canada | $20.00 | $12.56 | $5.22 | 69 of 75 |
| Chile | $23.00 | $14.99 | $8.99 | 68 of 74 |
| China | $15.00 | $7.99 | $2.23 | 68 of 76 |
| Colombia | $21.00 | $15.99 | $8.34 | 63 of 73 |
| Costa Rica | $24.00 | $18.99 | $7.99 | 51 of 74 |
| Croatia | $12.00 | $5.99 | $1.62 | 73 of 74 |
| Cyprus | $12.00 | $5.99 | $2.29 | 69 of 71 |
| Czechia | $12.00 | $5.65 | $2.75 | 68 of 70 |
| Denmark | $12.00 | $5.99 | $1.66 | 69 of 71 |
| Dominican Republic | $33.00 | $16.23 | $5.81 | 66 of 70 |
| Ecuador | $21.00 | $15.99 | $8.27 | 55 of 70 |
| Egypt | $17.00 | $11.52 | $3.87 | 61 of 74 |
| France | $14.00 | $6.19 | $1.62 | 75 of 75 |
| Gabon | $72.00 | $27.05 | $11.99 | 63 of 65 |
| Georgia | $12.00 | $8.69 | $3.55 | 49 of 69 |
| Germany | $14.00 | $5.99 | $1.47 | 73 of 73 |
| Greece | $14.00 | $5.99 | $1.72 | 72 of 73 |
| Guatemala | $24.00 | $16.24 | $5.97 | 60 of 67 |
| Hong Kong | $11.00 | $6.71 | $1.70 | 61 of 68 |
| Hungary | $12.00 | $5.99 | $2.29 | 67 of 72 |
| Iceland | $12.00 | $5.99 | $2.53 | 65 of 72 |
| India | $17.00 | $12.17 | $3.27 | 69 of 77 |
| Indonesia | $14.00 | $7.25 | $3.78 | 72 of 75 |
| Iraq | $18.00 | $13.89 | $7.40 | 50 of 58 |
| Ireland | $14.00 | $5.99 | $2.29 | 73 of 73 |
| Israel | $15.00 | $8.36 | $3.79 | 63 of 66 |
| Italy | $14.00 | $5.99 | $2.40 | 74 of 74 |
| Japan | $11.00 | $7.10 | $2.97 | 69 of 80 |
| Kazakhstan | $11.00 | $8.00 | $2.31 | 55 of 71 |
| Kenya | $30.00 | $19.14 | $10.50 | 57 of 70 |
| Kyrgyzstan | $15.00 | $8.15 | $2.25 | 55 of 66 |
| Laos | $36.00 | $12.99 | $7.40 | 61 of 65 |
| Lithuania | $12.00 | $5.99 | $2.29 | 66 of 71 |
| Malaysia | $12.00 | $6.99 | $3.78 | 69 of 75 |
| Malta | $12.00 | $5.99 | $3.10 | 64 of 71 |
| Mexico | $16.00 | $13.38 | $5.67 | 55 of 75 |
| Montenegro | $18.00 | $7.99 | $2.34 | 67 of 69 |
| Morocco | $24.00 | $10.99 | $4.80 | 71 of 73 |
| Nepal | $77.00 | $16.65 | $6.00 | 61 of 61 |
| Netherlands | $12.00 | $5.99 | $1.71 | 73 of 75 |
| New Zealand | $16.00 | $8.91 | $3.27 | 69 of 71 |
| Nigeria | $30.00 | $25.36 | $16.25 | 49 of 67 |
| Norway | $12.00 | $6.00 | $1.63 | 70 of 71 |
| Oman | $18.00 | $14.00 | $6.36 | 55 of 66 |
| Pakistan | $12.00 | $8.90 | $3.05 | 55 of 65 |
| Peru | $17.00 | $15.06 | $6.65 | 53 of 72 |
| Philippines | $12.00 | $8.90 | $3.25 | 61 of 73 |
| Poland | $12.00 | $5.99 | $1.66 | 69 of 70 |
| Portugal | $12.00 | $5.99 | $2.60 | 73 of 74 |
| Qatar | $23.00 | $12.31 | $5.47 | 67 of 70 |
| Romania | $12.00 | $5.99 | $1.62 | 68 of 69 |
| Russia | $18.00 | $10.58 | $3.75 | 53 of 58 |
| Saudi Arabia | $18.00 | $13.50 | $5.35 | 70 of 77 |
| Senegal | $90.00 | $20.73 | $12.25 | 62 of 63 |
| Serbia | $18.00 | $8.49 | $2.96 | 70 of 73 |
| Seychelles | $87.00 | $30.99 | $11.99 | 67 of 67 |
| Singapore | $14.00 | $6.66 | $2.44 | 75 of 76 |
| Slovakia | $12.00 | $5.99 | $2.29 | 69 of 71 |
| South Africa | $12.00 | $11.99 | $5.99 | 40 of 75 |
| South Korea | $18.00 | $6.99 | $2.95 | 76 of 79 |
| Spain | $11.00 | $5.99 | $1.81 | 73 of 73 |
| Sweden | $12.00 | $5.99 | $1.72 | 69 of 71 |
| Switzerland | $12.00 | $6.18 | $1.60 | 64 of 71 |
| Tajikistan | $125.00 | $17.99 | $8.50 | 60 of 64 |
| Thailand | $7.00 | $6.73 | $2.69 | 44 of 73 |
| Tunisia | $18.00 | $9.15 | $3.89 | 67 of 68 |
| Turkey | $11.00 | $5.69 | $1.43 | 71 of 73 |
| Ukraine | $12.00 | $5.99 | $1.70 | 60 of 65 |
| United Arab Emirates | $12.00 | $12.99 | $4.98 | 32 of 77 |
| United Kingdom | $14.00 | $6.00 | $3.33 | 74 of 74 |
| United States | $12.00 | $7.99 | $3.55 | 64 of 75 |
| Uruguay | $21.00 | $19.48 | $8.21 | 41 of 65 |
| Uzbekistan | $12.00 | $7.09 | $3.00 | 60 of 71 |
| Vietnam | $11.00 | $8.80 | $2.72 | 57 of 74 |
Traveller reviews of ZenSim
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Questions
How do ZenSim's prices compare?
For 5 GB lasting a month, ZenSim sells in 85 of the countries we compare; its price is typically 188% of the middle price of every brand we read there, and below the middle in 1 of 85. Read 7 Nov 2026.
When do ZenSim's days start counting?
Its Japan page says installing early does not start the plan, which activates automatically on arrival in Japan, and the eSIM can be installed up to 90 days before departure. (read on ZenSim's own page, 2026-11-07: https://zensim.com/travel-esims/japan/)
Can I use hotspot with ZenSim?
Its travel eSIMs page lists unlimited hotspotting as a feature, and its Japan page says unlimited hotspotting is built in for the whole trip. (read on ZenSim's own page, 2026-11-07: https://zensim.com/travel-esims/)
How do I reach ZenSim's support?
Its help page offers chat on WhatsApp and Messenger and email, and says the team is online more or less all the time. (read on ZenSim's own page, 2026-11-07: https://zensim.com/help/)
Does ZenSim need an app or an account?
Buy on the website, then scan the QR code sent by email or install in the ZenSim app; the pages read do not say whether an account is needed. (read on ZenSim's own page, 2026-11-07: https://zensim.com/travel-esims/japan/)
What is ZenSim's refund policy?
No data used and bought within the last 6 months: full refund even if installed, to the original payment method, usually in 1 to 3 days and up to 10 business days. (read on ZenSim's own page, 2026-11-07: https://zensim.com/refund-policy/)
How does ZenSim deliver the eSIM, and can I top up?
QR code emailed, or install through the ZenSim app; the settings to change on arrival are emailed too. Top-ups: Yes: in the ZenSim app, add another plan for any country to the same eSIM, at 10% off the normal price. (read 2026-11-07)
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