Taiwan eSIM and SIM Card Guide for Visitors
SuperTools is based in Taiwan, so this is the guide we'd give a friend flying in. The short version: Taiwan has fast, dense mobile coverage, and visitors have two easy options. You can install a travel eSIM before you fly, or buy a prepaid tourist SIM at a counter in the arrivals hall. Both work well. The right choice depends on whether your phone supports eSIM and whether you want a local phone number.
The three local networks
Taiwan has three main mobile operators: Chunghwa Telecom, Taiwan Mobile and FarEasTone. All three run 4G and 5G networks that cover the cities, the high-speed rail corridor and the main tourist routes well. Whichever one your plan uses, you can expect a good connection in Taipei, Taichung, Tainan, Kaohsiung and along the west coast.
Coverage gets thinner in a few places visitors love:
| Area | What to expect |
|---|---|
| Taipei, Taichung, Tainan, Kaohsiung | Strong 4G and 5G nearly everywhere, including the metro |
| High-speed rail (THSR) | Generally good, with brief drops in tunnels |
| Taroko Gorge and the central mountains | Patchy in deep sections of the gorge and on mountain roads |
| Alishan and Hehuanshan | Signal around villages and visitor centres, gaps on trails |
| Green Island and Orchid Island | Signal near harbours and villages, weaker on remote coastline |
If you're heading into the mountains, save offline maps and your accommodation details before you go.
Travel eSIM vs airport SIM card
| Travel eSIM | Airport SIM card | |
|---|---|---|
| When you set it up | At home, before you fly | After landing, at a counter |
| Local phone number | Usually no (data only) | Usually yes |
| Needs eSIM-capable phone | Yes | No |
| Keeps your home SIM in the phone | Yes | You swap your physical SIM out (or use dual SIM) |
| Queue on arrival | None | Depends on flight times |
Choose a travel eSIM if your phone supports it and you mainly need data for maps, messaging and ride-hailing. You leave the airport connected, and your home SIM stays in your phone for bank codes.
Choose an airport SIM card if you need a Taiwanese phone number, for example to receive calls from a tour operator or a hotel. Telecom counters in the arrivals halls at Taoyuan International Airport sell prepaid tourist SIMs. Bring your passport, because SIM registration requires ID and counters may ask for a second form of identification.
Not sure your phone supports eSIM? See what a travel eSIM is and how to check.
Apps worth installing before you arrive
- LINE. Taiwan's dominant messaging app. Restaurants, guesthouses and tour operators often prefer it to WhatsApp.
- Google Maps. Works well for public transport in Taiwan, including metro, buses and trains.
- Uber or a local taxi app. Uber operates in major cities, and local taxi companies have their own apps.
- The THSR booking app. Lets you book high-speed rail seats on your phone. Popular departures sell out on holiday weekends.
Most of these apps verify your account by text message. Set them up at home, while your home number is active, rather than at the airport.
Paying and getting around
An EasyCard (a stored-value transport card) works on the Taipei and Kaohsiung metro systems, city buses, many trains and in convenience stores. It's sold at metro stations and convenience stores. Topping it up doesn't need mobile data, but checking routes and bus arrival times does, which is where your eSIM earns its keep.
How much data you'll need
Taiwan is compact and well connected, and many hotels, cafes and metro stations have Wi-Fi. A typical city trip uses less data than you might expect:
| Trip | Suggested data |
|---|---|
| 3 to 5 days in Taipei | 3 to 5 GB |
| 7 to 10 days around the island | 5 to 10 GB |
| Heavy video, hotspot for a laptop | 20 GB or a daily plan |
Our data guide breaks this down by activity.
Typhoon season
Typhoons mostly affect Taiwan between summer and autumn. Mobile networks are built for them, but heavy storms can still cause local outages, especially in mountain and coastal areas. During a typhoon warning, follow official alerts, keep your phone charged, and keep important booking details saved offline.
Emergency numbers
Dial 110 for police and 119 for fire and ambulance. Emergency calls generally work even on a data-only plan, because phones can place emergency calls through any available network. Don't rely on that as your only plan in remote areas, though.
FAQ
Do I need a Taiwanese phone number?
Usually not. Most visitors manage with data and internet calling. You'll want a local number if a tour operator or business insists on calling you, or for some local app sign-ups.
Does a Taiwan eSIM work on the high-speed rail?
Yes, with short drops in tunnels. The main stations have strong coverage.
Can I use my Japan or Asia eSIM in Taiwan?
Only if Taiwan is listed in the plan's country coverage. Multi-country Asia plans don't always include Taiwan, so check the list before you buy.
Is public Wi-Fi available in Taiwan?
Yes. Many metro stations, government buildings, cafes and hotels offer Wi-Fi, though sign-up steps and availability vary. A mobile plan is still the more reliable option.
Can I keep using my home number in Taiwan?
Yes. On a dual SIM phone, keep your home line on for text messages and turn off its data roaming so it doesn't run up charges. See keeping your home number.