Taiwan Travel eSIM Networks: Chunghwa, Taiwan Mobile, FarEasTone

Why Taiwan’s cheap local SIM is not the obvious buy

Taiwan is one of the few destinations where the local tourist SIM competes hard on price and still loses. The cards sold at the airport are cheap, they come with generous allowances, and on a strict cost-per-gigabyte basis a few of them beat the travel eSIM plans we track. Then you look at what they ask in return.

The cheap product is sold at counters inside the terminal during opening hours, and every prepaid line has to be registered against an identity document in person. At the airport a passport is generally enough; in the city or at a convenience store a second document is usually requested as well. None of that is unreasonable, but it converts a two minute purchase into a twenty minute arrival ritual at exactly the moment you would rather be on a train.

That is the whole calculation, and it is why the eSIM wins here on convenience rather than price. Our Taiwan plan ranking shows the spread across every plan we hold, and the allowance calculator will size one to your dates.

Which Taiwanese network to ride

The gap between the three networks is the widest in our country set, which makes the host network on your plan worth more here than in most destinations.

Chunghwa Telecom wins the independent testing by a distance

Chunghwa Telecom took nine outright wins and three joint wins in Opensignal’s July 2026 Taiwan report, sweeping all four speed awards and both coverage awards. Its Download Speed measured 106.1 Mbps and its 5G Download Speed 268.1 Mbps, which is 47% faster than FarEasTone on 5G. On the numbers alone this is the network to be on, and it is also the one with the widest reach outside the western corridor.

Taiwan Mobile is the second network and the mid-market host

Taiwan Mobile is fast, well covered in the cities and the usual alternative host for half-price brands. It does not appear in the same award bracket as Chunghwa, and its profile sits a band below on both 4G and 5G. For a Taipei and Kaohsiung itinerary the practical difference is small; for a mountain or east coast route it is the network you would rather not be on.

FarEasTone is the one to check for daily caps

FarEasTone is the third national network and the one whose local tourist product carries a daily throttle — the card runs at full speed up to a cap and then drops for the rest of the day. That is a property of the prepaid product rather than the network, and it does not affect a travel eSIM riding the same masts, but it is the reason the two products are not interchangeable.

Read the awards as a ranking and the speed bands as indicative ranges. One set comes from Opensignal’s independent measurement programme, the ranges are our own compilation from carrier listings, and the congestion on the mast you attach to still decides what you feel.

The registration rule and why the queue moved online

Taiwan requires prepaid lines to be registered against an identity document, and the requirement applies to the cards sold to visitors. The airport counters handle it with a passport. City shops and convenience stores, which are where residents buy, usually ask for a second document because their flows are built for residents rather than tourists.

The practical effect is that the convenient local option and the cheap local option are the same product, and it exists only inside the terminal. If your flight lands at an hour when the counters are shut, the choice disappears entirely and the eSIM is the only thing that works from the aircraft door.

All 10 brands we track connect from the moment the profile installs, which is the property that makes the difference. The phone compatibility checker covers specific models if you are not sure your handset takes a profile.

5G in Taiwan and where the island stops being covered

All three networks run commercial 5G and every Taiwanese carrier profile we track lists it, with measured 5G download speeds among the highest in our data. The coverage shape follows the population: a dense western corridor from Taipei through Taichung to Kaohsiung, served by the high-speed rail line and by all three networks throughout.

The gaps are topographic rather than geographic. The Central Mountain Range that runs down the spine of the island is thinly covered on every network, and the east coast road between Hualien and Taitung, the Taroko gorge and the mountain roads inland from Taichung are where you should expect to lose signal for stretches. Download offline maps before any of those.

An eSIM is a profile your phone downloads rather than a card it accepts, a standard maintained by the GSMA, so it works with whatever bands your handset covers.

Two closing notes. If your route continues to Japan, buy an East Asia regional plan rather than a Taiwan-only one, since the pairing is common enough that a single-country plan becomes a limitation instead of a saving. And because Chunghwa’s lead in the testing is real, it is worth checking which host network a plan lists before buying on price alone — our Taiwan plan ranking shows the host for each, the allowance calculator sizes a plan to your trip, and live discounts sit on the eSIM promo codes page.