Taiwan is a phone-first country
The island is roughly 36,000 km² with around 23 million people, most of them in dense west-coast cities. Almost everything practical happens through an app: ordering noodles via QR code at the table, paying for the metro with EasyCard in your phone, booking the High Speed Rail, calling a Uber-equivalent through Line. Mandarin signage is everywhere; English is uneven. The camera-translator and Maps are not optional convenience — they're how you read the country.
Roamzy charges $2.97 per gigabyte in Taiwan. That's $0.0029 per megabyte, billed in real time on Taiwanese networks. No subscription, no expiry on the unused balance, no minimum bundle. One per-MB rate across 192 countries — same rate in Taipei 101 as on the East Rift Valley road.
How much will Roamzy actually cost on this trip?
A typical Taiwan day uses 0.8–1.5 GB: Maps for the Taipei MRT and the High Speed Rail platforms, the camera-translator on a hand-painted noodle stall, Line for messaging local contacts, your bank app for the contactless payments that work in chains and convenience stores, video calls home. Call it 1 GB/day:
| Trip length | Roamzy ($2.97/GB) | Tourist roaming pass | Airport local SIM |
|---|---|---|---|
| 3 days (Taipei) | $8.91 | $25–55 | $15–30 + 20 min at the counter |
| 1 week (HSR loop) | $20.79 | $45–95 | $25–45 + paperwork |
| 2 weeks (full island) | $41.58 | $80–170 (often two passes) | $30–55 + 30-day cap |
Competitor prices in columns 3 and 4 are 2025 ranges based on typical offerings; exact figures depend on your home carrier and the airport store you visit. Roamzy's rate in column 2 is our actual published rate from the pricing page.
The SIM kiosks at TPE Taoyuan and TSA Songshan are well-organized but you still queue after a long-haul. The eSIM skips that — pre-installed at home, attached on descent, the meter starts as your phone catches a Taiwanese tower.
How is coverage distributed by region?
| Region | 5G | LTE | Notes |
|---|---|---|---|
| Taipei, New Taipei, Taoyuan | Yes | 100% | 5G dense; MRT and HSR platforms covered |
| Taichung, Tainan, Kaohsiung | Yes | 100% | West-coast cities — competitive throughput |
| HSR (Taipei–Kaohsiung) | At stations | Most of the route | Brief tunnel drops; signal returns within a minute |
| East coast (Hualien, Taitung) | Patchy | Reliable in towns | Mountain runs on the Suhua highway lose signal in tunnels |
| Central mountains (Alishan, Hehuanshan) | No | Patchy | 4G in valley villages; thin on the high passes |
| Outlying islands (Penghu, Kinmen, Matsu) | Town centers | Variable | Reliable in main towns; ferries drop signal mid-channel |
Free Wi-Fi exists at MRT stations and convenience-store chains, but the captive portal is often Mandarin-only and authentication can want a Taiwanese phone number. The eSIM removes that lottery.
Things you'll feel about Taiwan specifically
- Line, not WhatsApp. Taiwanese contacts — guides, hostel hosts, the masseur at the hot spring — live in Line. Pre-install before you fly.
- EasyCard in your phone. The MRT, buses, and convenience stores all take the EasyCard wallet on Apple Pay or Google Pay. First load and balance check want a connection.
- Convenience-store culture. 7-Eleven and FamilyMart are de facto utilities — bill payment, parcel pickup, ATM, hot food. Most of that is in Mandarin; the camera-translator handles it.
- Night markets are cash-and-app. Bigger stalls take cards; smaller ones want cash or local payment apps that won't work for a foreign account. Pull TWD ahead.
- Earthquake alerts. The national emergency push hits everyone on a Taiwanese network. Don't disable it.
How do I install my Roamzy eSIM?
| Plug type | Voltage | Frequency | iOS | Android |
|---|---|---|---|---|
| Type A, B | 110 V | 60 Hz | iPhone XS+ | Pixel 3+, Galaxy S20+ |
- Sign in to Roamzy via Telegram or Google
- Top up with a minimum of 20 USDT — stablecoins, no cards, no banks, no FX surcharges
- The QR code appears in the dashboard once payment confirms
- Settings → Cellular → Add eSIM → scan QR (do this on home Wi-Fi before you fly)
- The counter starts the moment you land at TPE, TSA, KHH, or RMQ
Supported stablecoins, networks, and common iPhone/Android setup errors are in the FAQ.
What are Roamzy's honest limitations?
Three traps Roamzy doesn't have, because they were never built in.
- No welcome promo that bait-and-switches the second top-up. The rate on top-up #1 is the rate on top-up #20.
- No fine-print throttling. One rate, full speed — first GB and the hundredth both cost $0.0029/MB.
- No auto-renewal. Balance runs out, the eSIM stops. No background charge surfacing months later.
It's not a marketing gimmick — it's an engineering decision born from indifference to gimmicks. You can't make a tariff cheaper than no fine-print and no expiry — so we don't.
What if my trip continues to other countries?
Taiwan often pairs with regional flights to Japan or Southeast Asia. The eSIM hands over without you touching anything:
- Japan — short hop from TPE to Tokyo or Osaka
- Thailand — common Bangkok onward via TPE or KHH
- If you want the underlying mechanics — how roaming actually gets priced and why it hurts