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 $4.20 per gigabyte in Taiwan. That's $0.0041 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 193 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 ($4.20/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 $0.0041/MB.
- No auto-renewal. Balance runs out, the eSIM stops. No background charge surfacing months later.
Set it up before Taiwan, use it whenever; the balance won't expire while you decide. Removing time limits wasn't a campaign idea, it was an engineering one, and it's why the price holds up.
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