Taiwan eSIM providers at a glance

ProviderDataDurationPriceHotspot
Airalo Top pick1 – 20 GB7 – 30 days$4.50 – $26YesDetails →
Yesim Cheapest1 – Unlimited3 – 30 days$2.00 – $60YesDetails →
Saily1 – 20 GB7 – 30 days$3.49 – $24YesDetails →
DrimsimPay-as-you-goNo expiry~$4.00/GBYesDetails →

Numbers shown are entry-level only and update without notice — cross-check on the provider's checkout flow.

Detailed provider reviews for Taiwan

Airalo

Recommended

Airalo's Taiwan plan rides Chunghwa Telecom, which is the right call if you're going east of the central mountains — Hualien, Taitung, the Taroko area and the long stretch down to Kenting. The 5 GB / 30 day plan covers most one-week itineraries comfortably and the activation works on Taoyuan airport wifi.

1 GB
$4.50 · 7 days
3 GB
$8.50 · 15 days
5 GB
$11.50 · 30 days
10 GB
$16.00 · 30 days
Pros
  • Chunghwa backbone — best east coast and mountain coverage
  • Reliable 5G in all major cities
  • 30-day plans handle longer Taiwan trips
Cons
  • Largest single plan is 10 GB
  • Slightly more expensive than Yesim entry tiers
Visit Airalo →

Yesim

Best price

Yesim's $1.50 / 1 GB tier is the cheapest way to get connected in Taiwan, which makes it ideal for layovers and weekend trips. It runs on Far EasTone here, which is fully fine for everything west-coast — Taipei, Taichung, Tainan, Kaohsiung — and noticeably weaker only in the deep mountain interior.

1 GB
$1.50 · 3 days
5 GB
$7.50 · 14 days
10 GB
$12.00 · 30 days
Unlimited
$27.60 · 7 days
Pros
  • Cheapest entry tier — perfect for layovers
  • Far EasTone is excellent on the west coast
  • Unlimited weekly plan for heavy users
Cons
  • Weaker than Chunghwa in Taroko and Alishan
  • 1 GB tier expires in 3 days
Visit Yesim →

Saily

Privacy-focused

Saily comes from NordVPN and bundles a basic VPN tunnel and ad-blocking into the eSIM. In Taiwan the practical benefit is modest — local networks are well-managed — but the 20 GB / 30 day plan is the largest single bucket on the page, which is genuinely useful for digital nomads doing a multi-week stay in Taipei.

1 GB
$3.49 · 7 days
3 GB
$7.99 · 30 days
5 GB
$11.99 · 30 days
20 GB
$22.99 · 30 days
Pros
  • 20 GB plan is the largest single allowance
  • Built-in VPN and ad blocking
  • All plans valid for 30 days
Cons
  • Less optimised for east coast and mountain areas
  • Slight latency overhead from VPN
Visit Saily →

Drimsim

Pay-as-you-go

Drimsim is balance-based with no expiry, useful if Taiwan is one stop on a wider East Asia trip and you want one SIM that also works in Japan, Korea and Hong Kong. The per-GB rate around $4 is higher than the Airalo and Yesim fixed plans, so use it for flexibility, not for cost.

Pay-as-you-go
~$4.00/GB
No expiry
Balance never expires
Pros
  • Same SIM works across East Asia
  • Balance never expires — great for repeat trips
Cons
  • More expensive per GB than fixed plans
  • App and top-up flow is clunkier
Visit Drimsim →

How much data do you need in Taiwan?

Taiwan is one of the densest mobile data markets in the world — locals burn 25+ GB per month on average — so the local infrastructure is excellent. Travellers usually need much less because Taipei has free wifi at every MRT station and most cafes. A 5 GB plan covers a one-week trip combining Taipei, Tainan and Taroko Gorge with room to spare.

For heavy users — anyone working remotely, doing a lot of video calls, or uploading lots of food photography — 10 GB or more is comfortable. The HSR has decent on-board wifi but it's slow at peak times, so tethering off the eSIM is faster.

iPASS app data: If you're using EasyCard or iPASS for transit and small payments, the official apps need data to top up on the fly. They're light, but worth keeping in mind.

Network coverage in Taiwan

Chunghwa Telecom is the incumbent and has the deepest rural coverage, particularly along the east coast (Hualien, Taitung) and into the central mountains. Far EasTone and Taiwan Mobile are essentially equivalent in cities and along the west coast HSR corridor — the difference only shows up if you're going to Alishan, the Hehuanshan area, or any of the Taroko Gorge side trails.

5G is widespread in Taipei, Taichung, Tainan and Kaohsiung on all three networks. The east coast railway has good coverage at every station with 1–2 minute drops in the longer tunnels. The TRA Forest Railway up to Alishan loses signal for long stretches above 1,500 metres.

Tips for using an eSIM in Taiwan

Taoyuan International Airport has fast free wifi in arrivals — set up your eSIM before you board the airport MRT to Taipei Main Station. The MRT itself has working 4G in every station and most tunnel sections, so you can buy your EasyCard on the way and start navigating immediately.

Google Maps works well in Taiwan but for hiking the better app is Hikingbook (the Taiwan-specific trail app) — download trail data offline before you head into the mountains. Taroko Gorge in particular has long stretches without signal and the weather can shut sections of the road without warning.

Taiwan is mostly cashless in cities — EasyCard and Line Pay handle nearly everything — but you'll still want some cash for night markets and smaller restaurants. ATMs at 7-Eleven and FamilyMart are reliable and accept most foreign cards.

Why eSIM for Taiwan

Local Taiwan SIMs at the airport are reasonably priced (around NT$300 for a tourist plan) but the queues at Taoyuan can stretch 20–40 minutes after a big arrival wave. An eSIM means you walk straight to the MRT.

The other reason is short trips. If you're in Taiwan for a long layover or a weekend stop on a wider Asia tour, paying for a dedicated local SIM is overkill. A 1–3 GB Yesim or Airalo plan for a few dollars is the right tool for a 48-hour visit.

Frequently asked questions

Yes, with the usual tunnel drops. The HSR has on-board wifi but it gets slow at peak times, so tethering off the eSIM is faster. All three networks have continuous coverage along the corridor between Taipei and Kaohsiung except inside the longer tunnels — expect 30-second blackouts every now and then on the central section.
In cities, all three are essentially equivalent — they all run good 5G in Taipei, Taichung, Tainan and Kaohsiung. The difference shows up east of the central mountains and in remote areas: Hualien, Taitung, the Taroko area, Alishan and Hehuanshan. There Chunghwa has noticeably deeper coverage and a better chance of signal at small bus stops.
On the main road through the gorge, mostly yes — Chunghwa-based plans give the most consistent signal. In the side canyons and on the longer trails (Zhuilu Old Road, Baiyang Trail) signal drops out for long stretches. Always download offline maps before you enter the park, and check current trail closures because the weather forces closures regularly.
No — that requirement only applies to local Taiwan SIMs sold by Chunghwa, FET or Taiwan Mobile at airport kiosks and retail stores. Travel eSIMs are pre-registered through the international provider, which means you skip the queue entirely. This is the main practical reason to set one up before you fly.
No, not on the dedicated Taiwan plans. Taiwan, mainland China and Hong Kong are billed as separate countries by every provider on this page. If you're doing a multi-stop trip, look at the regional Asia plans or install a second eSIM at your next stop.