Best Travel eSIM for Taiwan (2026): Which Network, What It Costs, and Will It Hold a Call
Three days of back-to-back meetings in Taipei, a laptop on your hotspot in the taxi, and one call you cannot drop. Here is which network you actually land on, what it costs per gigabyte, and when the NT$800 tourist SIM wins.
Quick answer: For the business traveller doing three or four working days in Taipei with video calls and a tethered laptop. The Taiwan country plan roams on Taiwan Mobile on 4G and 5G and slows to 384 kbps after the bucket. On 23 September 2026, 10 GB for 7 days was US$17.69, about US$1.77 per GB, and unlimited for 3 days was US$16.08, about US$5.36 a day. For a short, call-heavy trip, take unlimited.
Key takeaways
- Which network depends on which plan. The Taiwan country plan roams on Taiwan Mobile, 4G and 5G, and slows to 384 kbps. The South-Eastern Asia regional plan, 18 countries, roams on Chunghwa Telecom on 5G and slows to 128 kbps.
- 384 kbps is not 128 kbps. Neither carries a video call, but 384 kbps keeps maps, mail and messaging usable, which matters when the bucket runs out an hour before your last meeting.
- Prices on 23 September 2026: 10 GB for 7 days, US$17.69, about US$1.77 per GB. Unlimited for 3 days, US$16.08. Unlimited for 7 days, US$30.17, which is more than the 10 GB plan over the same week.
- Video is the whole budget. A 720p one-to-one Zoom call is about 1.1 GB an hour and a 1080p group call about 3 GB, using Zoom's own figures. Everything else on a working day is rounding error.
Which network you get, and what it really costs
In Taiwan the Fizen eSIM roams on Chunghwa Telecom (5G). This is a Taiwan-only plan. At 128 kbps you can still send messages and load map tiles, but not hold a video call.
| Plan | Days | Price | Per day | Per GB | After the high-speed data |
|---|---|---|---|---|---|
| Unlimited | 3 | US$16.08 | US$5.36 | n/a | no throttle stated |
| Unlimited | 5 | US$20.14 | US$4.03 | n/a | no throttle stated |
| Unlimited | 7 | US$30.17 | US$4.31 | n/a | no throttle stated |
| Unlimited | 10 | US$35.92 | US$3.59 | n/a | no throttle stated |
| Unlimited | 15 | US$50.34 | US$3.36 | n/a | no throttle stated |
| Unlimited | 30 | US$89.63 | US$2.99 | n/a | no throttle stated |
| 3 GB | 3 | US$8.61 | US$2.87 | US$2.87 | slows to 384 kbps |
| 3 GB | 7 | US$9.11 | US$1.30 | US$3.04 | slows to 384 kbps |
| 1 GB | 3 | US$9.94 | US$3.31 | US$9.94 | slows to 128 kbps |
| 5 GB | 7 | US$10.13 | US$1.45 | US$2.03 | slows to 384 kbps |
| 5 GB | 15 | US$11.64 | US$0.78 | US$2.33 | slows to 384 kbps |
| 5 GB | 30 | US$12.16 | US$0.41 | US$2.43 | slows to 384 kbps |
| 5 GB | 7 | US$16.68 | US$2.38 | US$3.34 | slows to 128 kbps |
| 5 GB | 15 | US$17.35 | US$1.16 | US$3.47 | slows to 128 kbps |
Prices and carrier read from the Fizen catalogue on 23 September 2026. Data only, no calls or SMS.
Prices are before the welcome credit. A new user who opens the eSIM tab in the Fizen app for the first time gets US$10 of eSIM credit automatically, with no code, valid for 12 months. The app shows how much of it comes off your order. Paying by card on the web works too, but the credit only applies in the app.
This guide is written for one traveller: the person flying into Taipei for three or four working days, with meetings stacked back to back, a laptop tethered to their phone between them, and at least one call that cannot drop.
Taiwan eSIM prices: Fizen app vs Airalo (2 November 2026)
Exclusive to new Fizen app users: US$10 of eSIM credit lands in the eSIM tab the moment you join and pays for up to 30% of each plan until it is used. Here is what a new user pays in the app for Taiwan, next to Airalo's public price for the same data and days. Pay your way, with USDT or by card. Your money. Your freedom. No borders.
| Plan | Airalo | Fizen app, new users |
|---|---|---|
| 3 GB, 3 days | US$8.50 | US$5.95 SAVE 30% |
| 5 GB, 7 days | US$11.00 | US$7.70 SAVE 30% |
| 10 GB, 7 days | US$17.50 | US$12.25 SAVE 30% |
| 20 GB, 15 days | US$28.00 | US$19.60 SAVE 30% |
| 50 GB, 30 days | US$49.00 | US$34.30 SAVE 30% |
Which network does a Taiwan eSIM roam on?
- The Taiwan country plan roams on Taiwan Mobile, on 4G and 5G. The fixed 3 GB, 5 GB, 10 GB, 20 GB and 50 GB packages slow to 384 kbps once the high-speed data is used. The unlimited version of the country plan states no throttle speed at all.
- The South-Eastern Asia regional plan roams on Chunghwa Telecom, on 5G, and covers 18 countries. It slows to 128 kbps after the bucket.
| What you are doing | Bandwidth it needs | On 5G | At 384 kbps | At 128 kbps |
|---|---|---|---|---|
| Mail, messaging, maps, calendar | Under 0.5 Mbps | Fine | Usable | Slow |
| Audio-only call | 60 to 80 kbps (Zoom) | Fine | Works | Works, just |
| 720p one-to-one video call | 1.2 Mbps up and down (Zoom) | Fine | No | No |
| 1080p group video call | 3.8 Mbps up, 3.0 Mbps down (Zoom) | Fine | No | No |
| Uploading a 200 MB deck | Whatever is available | Under a minute on a good 5G link | Over an hour | Over three hours |
What does a Taiwan eSIM cost per day and per gigabyte?
Read from the Fizen catalogue on 23 September 2026, and these move. Country rows are Taiwan Mobile, regional rows are Chunghwa Telecom across 18 countries.
| Plan | Days | Total | Per day | Per GB |
|---|---|---|---|---|
| 3 GB, Taiwan Mobile | 3 | US$8.61 | US$2.87 | US$2.87 |
| 5 GB, Taiwan Mobile | 7 | US$10.13 | US$1.45 | US$2.03 |
| 10 GB, Taiwan Mobile | 7 | US$17.69 | US$2.53 | US$1.77 |
| 10 GB, Taiwan Mobile | 15 | US$18.19 | US$1.21 | US$1.82 |
| 20 GB, Taiwan Mobile | 15 | US$28.31 | US$1.89 | US$1.42 |
| 50 GB, Taiwan Mobile | 30 | US$49.67 | US$1.66 | US$0.99 |
| Unlimited, Taiwan Mobile | 3 | US$16.08 | US$5.36 | not applicable |
| Unlimited, Taiwan Mobile | 7 | US$30.17 | US$4.31 | not applicable |
| 10 GB, Chunghwa Telecom, 18 countries | 7 | US$23.52 | US$3.36 | US$2.35 |
How much data does a working day in Taipei use?
One Mbps sustained for one hour is about 0.45 GB. Every video row below is that conversion applied to Zoom's own published figures, which is why the numbers are so much larger than a tourist's day.
| A working day in Taipei | Rough data | Note |
|---|---|---|
| Mail, chat, calendar, documents on the phone | 0.2 to 0.3 GB | Steady background cost |
| Maps and taxi apps between meetings | 0.1 to 0.2 GB | Small, and it has to work at the kerb |
| Laptop on hotspot: cloud sync, a deck, a few attachments | 0.5 to 1.5 GB | The silent one. Turn on metered mode |
| One hour of 720p one-to-one video calls | About 1.1 GB | Zoom's published figure |
| One hour of 1080p group video calls | About 3 GB | The single biggest line of any day |
| Typical working day, one hour of video | About 2 to 3 GB | |
| Heavy day: two group calls and a big upload | About 4 to 6 GB |
Is coverage a problem outside Taipei, on the east coast or in the mountains?
- Rail tunnels on the east coast. The line down to Hualien and Taitung spends a lot of its length inside rock. This is not new: as far back as 2017 the NCC publicly acknowledged that tunnels were holding up Wi-Fi and 4G on the Hualien to Taitung line. We could not find a newer official statement on it, so that 2017 acknowledgement is the most recent public one this guide can point to. Treat a long east-coast rail leg as partly offline and load what you need beforehand.
- Taroko Gorge and the mountain roads. Steep valleys shadow signal regardless of how many towers are on the plain. Download the map before you leave the city.
- The Alishan forest railway and high-altitude routes. Same physics, same advice.
- Between towns on the east coast generally. Coverage is real but thinner than the west, and a moving vehicle in a valley is the worst case for any network.
Should I buy a tourist SIM at Taoyuan airport instead?
It is a genuinely competitive option in Taiwan, more so than in most of Asia, and you should see the numbers before deciding.
| Tourist SIM at the airport | Travel eSIM | |
|---|---|---|
| Price for a 7-day unlimited line | NT$800, from cht.com.tw on 23 Sep 2026 | US$30.17 unlimited, or US$17.69 for 10 GB |
| Per day on unlimited | NT$800 over 7 days, about US$3.60 a day | US$4.31 on the 7-day eSIM, US$5.36 on the 3-day |
| Taiwanese number and calls | Yes, plus call credit | No, data only |
| What registration involves | Two original IDs at a counter | Nothing on arrival |
| When you are online | After you find the counter and register | Walking off the plane |
| Your home number | Out of the phone, or a second line | Stays active for bank codes |
| If it fails | Back to a counter | A replacement issued one to one |
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- Information only. Fizen publishes this article to inform, not to sell. Nothing here is an offer, solicitation or sale of any product or service, and it is not financial, investment, legal or tax advice.
- For readers in the United States. This article provides information only. It is not an offer, solicitation or sale of any product or service, and it is not financial, investment, legal or tax advice. Fizen is not offered to US Persons.
- Independent. Fizen is not affiliated with, endorsed by or a partner of Taiwan Mobile, Chunghwa Telecom, Far EasTone, Taoyuan International Airport, the NCC, the iTaiwan service or Zoom. Coverage percentages are the carriers' own published claims and change.
- Rules change, so check before you travel. SIM registration and entry rules are set by the Taiwanese authorities and change. Check official sources before relying on anything here.
- Data only. A travel eSIM carries data. It does not give you a Taiwanese phone number and it does not send or receive SMS, so keep your home SIM active for bank one-time codes and calls. Fizen's QR Pay is not available in Taiwan.
- Prices and estimates. Plan prices, validity, data size and throttle speed are the ones shown at checkout on the date given, and local SIM prices are those published by the carrier on that date. Data-use figures are approximations derived from published bandwidth numbers and your real use will differ. Your phone must support eSIM and be carrier-unlocked, and most travel eSIMs cannot be topped up.
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Sources
- Chunghwa Telecom: tourist prepaid card plans and prices
- Taiwan Mobile: tourist prepaid card, airport counters and required documents
- Taiwan Mobile: network quality, 5G population and rural coverage (end 2024)
- iTaiwan Wi-Fi: about the service, hotspots, registration and bandwidth
- Taipei Times: tunnels impede progress on railway Wi-Fi and 4G, NCC (2 October 2017)
- Zoom Support: bandwidth requirements
- Tether: strategic investment in Fizen
Updated 23 September 2026. Plan prices, local SIM prices and carrier coverage claims change; check before you buy.
City guides: Tokyo eSIM guide, Seoul eSIM guide.
