Taiwan · roaming cost calculator
Roaming Price Audit: What 10 Days of Data Cost in Taiwan
HelloRoam, first on this site's rubric, does not sell Taiwan: its catalogue of 29 Oct 2026 lists 185 destinations. In Asia it sells 30 destinations, among them Afghanistan, Armenia and Azerbaijan, so a trip that continues there can switch to it. HelloRoam's 7-day unlimited plan has a median price of $21.50 across the 35 countries where all five providers were priced.
Currency is the column nobody prices. HelloRoam settles a Taiwan order in 31 currencies, and a dollar charge on a euro or sterling card picks up 2 to 4 percent at the bank.
Airalo covers 200+ destinations to HelloRoam's 185, one column the rival wins outright.
Airalo, Holafly and Saily plans, Taiwan
HelloRoam, first on this site's rubric, sells 185 destinations and Taiwan is not one of them, so this page ranks no provider here. The four below list Taiwan plans; Airalo covers 200+ destinations to HelloRoam's 185.
Holafly sells unlimited daily data in Taiwan. Remote workers and streamers avoid per-GB tracking on longer stays — one flat daily rate covers the whole trip.
Get eSIMNomad's per-GB rates are most competitive in Southeast Asia and popular tourist routes. In Taiwan, 5G data at $2.30/GB is among the lower per-GB rates in the market.
Get eSIMAiralo connects to a local 5G network in Taiwan at $2.40/GB. Coverage spans all major cities and transport hubs.
Get eSIMSaily's Taiwan plan sells 5G access. VPN toggle and eSIM management live in one privacy-focused app — no separate NordVPN install needed.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Airalo vs HelloRoam · Holafly vs Saily · Holafly vs Nomad · Holafly vs HelloRoam · Saily vs Nomad · Saily vs HelloRoam · Nomad vs HelloRoam
The full picture
How much each carrier charges per day in Taiwan
Every major carrier's published Taiwan rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| AT&T | International Day Pass | $12.00source | $84.00 | LTE | Plan data |
| Verizon | TravelPass | $12.00source | $84.00 | LTE | Plan data |
| T-Mobile | International Pass | $10.00*source | $50.00 | LTE | 2GB per 1 Day pass |
| eSIM · Airalo | Sold by the gigabyte | — | $4.50/GB | 5G | Your choice |
*T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. The 1 Day International Pass costs $10; the 7-day figure is the cheapest pass mix, 10-day pass.
Compare all carrier roaming plans to see how AT&T, Verizon, T-Mobile, Vodafone, and EE stack up against eSIM providers.
Pay-per-use cost audit
Taiwan data bill scenarios: AT&T without a day pass
AT&T pay-per-use data in Taiwan costs $2.05/MB when no $12/day international day pass is active. At that rate, five common activities add up quickly.
5-minute FaceTime call (~75 MB): $154. 30-minute Zoom meeting (~450 MB): $922. 1 hour of Google Maps navigation (~50 MB): $102. Uploading 20 vacation photos (~200 MB): $410. 1 hour of YouTube (~500 MB): $1025. Combined, those five activities use roughly 1.3 GB — before background app refresh or iCloud sync adds anything. Rates checked June 2026. Source: AT&T international rate card.
Personalize your savings
Your Taiwan saving against $12 a day
Adjust the trip length, the carrier and the daily data below and the calculator reprices both sides. The starting point is the 10-day average stay recorded for Taiwan: $120 on an AT&T day pass at $12 a day, against $4.50 a gigabyte on a travel eSIM. Both prices buy access to the same local operators.
Network coverage
Taiwan operator coverage: urban and rural
Verizon TravelPass connects to a local network in Taiwan at $12/day. A travel eSIM connects to the same local network at $4.50/GB. Both options connect to local towers in Taiwan. The eSIM removes the carrier surcharge. Travel eSIM providers deliver the same 5G signal for less. Taiwan Mobile supports both 5G and LTE in Taiwan. Neither AT&T roaming nor travel eSIMs restrict you to the slower LTE band. Both give you the fastest available signal. AT&T charges $12/day for it. An eSIM charges $4.50/GB. Taiwan has widespread 5G coverage. All three major carriers offer 5G with good coverage in urban areas
Pricing breakdown
Taiwan data costs side by side
Here is the 14-day cost breakdown for Taiwan. AT&T International Day Pass: $12 per 24 hours, $120. Verizon TravelPass: $168. T-Mobile International Passes: $75 (30-day pass). eSIM 10GB plan on a local network: $45. That is $75 less than AT&T, a 63% reduction for the same 5G connectivity.
T-Mobile's International Pass in Taiwan costs $10/day, the lowest daily rate of the three major US carriers. AT&T is $12/day. Verizon is $12/day. An eSIM on a local network averages $3.21/day when you buy the 10GB plan upfront.
Choosing the right eSIM tier for Taiwan depends on trip length and daily habits. Available tiers: . A 1.5 GB/day user on a 14-day trip needs roughly 21GB.
Trip cost breakdown
Taiwan roaming bill by trip type
The 3-day traveler pays $36 on AT&T for maps and messaging in Taiwan. A 2GB eSIM on a local network covers the same trip for $9 — $27 less.
The 14-day family vacation reaches $120 in AT&T charges per person. Four lines on one account come to $300, because each extra line used the same day adds $6. Four 15GB eSIM plans on a local network cost $270 combined — $30 less for the group.
A 30-day stay runs $120 on AT&T for video calls and streaming. A 50GB eSIM on a local network at $225 is -87% less for the same local towers. Rates checked June 2026.
Airport options
Taiwan airport connectivity costs for arriving travelers
Chunghwa Telecom and Taiwan Mobile and Far EasTone staff the SIM counter at Taiwan Taoyuan International Airport (TPE). Service is in Taiwan's official language; English assistance is inconsistent. Passport or ID is required for SIM registration. The counter process takes 5-15 min; 24-hour SIM vending machines available and requires your passport as proof of identity. A 5GB eSIM at $22.50 is purchased online in English before you board — no language barrier, no forms to fill out at the counter.
Data planning
Taiwan GB budget for a 7-day trip
Most US travelers use more data at home than abroad because they rely on WiFi less when navigating an unfamiliar city. In Taiwan, 1.5 GB per day is a fair budget for 7 days, totaling 11GB. Good WiFi in hotels and cafes reduces your mobile data needs.
5GB covers about 102 hours of live map navigation, enough for a 7-day trip with directions to every meal and museum. AT&T charges $84 for the same coverage on a local network.
Connectivity
Trusting public WiFi in Taiwan: risks and alternatives
Excellent WiFi in cities; free iTaiwan public WiFi network available Airport WiFi in Taiwan typically limits free sessions to 30-60 minutes after landing. Once that runs out, you are relying on hotel WiFi or paying airport day-pass rates. An eSIM on a local network activates before you board and gives you 5G speeds from the moment you land — no session timers.
Plan your data
Taiwan data consumption: what to expect
A family of four traveling to Taiwan each with AT&T International Day Pass pays $12 for the first line and $6 for each extra line, $30/day in roaming. Over 10 days that totals $300. Four separate 5GB eSIM plans on a local network cost $90 combined — $210 less for the same connection.
Taiwan has 3 mobile operators. Chunghwa Telecom runs the largest network with 5G coverage. Both carrier roaming and travel eSIMs connect to a local network. Roaming adds a $12/day surcharge. The eSIM does not.
Airport SIM counters at Taiwan Taoyuan International Airport (TPE) charge $15-30 for 5-30 days unlimited data after a 5-15 min; 24-hour SIM vending machines available wait — still more than a 5GB eSIM at $22.50. WiFi in Taiwan is widely available and reliable. An eSIM fills the gaps at $4.50/GB instead of AT&T's $12/day roaming charge. At Taiwan Taoyuan International Airport (TPE), Chunghwa Telecom, Taiwan Mobile, Far EasTone offer tourist SIMs — but an eSIM installed before departure avoids the airport queue entirely.
Quick reference
Taiwan Travel Essentials
110/119
110, 119 are the emergency numbers in Taiwan. Different numbers may route to different services — save all of them before your trip. Emergency calls work from any mobile device, including travel eSIMs.
Type A/B
US plugs (Type A flat two-prong and Type B three-prong) fit Taiwan's outlets directly. No adapter is needed for phones, laptops, or standard US electronics. Voltage is 120V — compatible with dual-voltage US chargers.
CST (UTC+8)
New Taiwan Dollar (TWD) (NT$)
Cash in New Taiwan Dollar (TWD) is preferred across most of Taiwan outside major hotels and tourist centers. Card terminals are not common in local markets or small restaurants. Withdraw enough cash at a reliable ATM before leaving the city — rural areas may not have ATM access.
Good to know
Taiwan's emergency number is 110/119, not 112. Both carrier roaming SIMs and eSIMs can dial emergency numbers without an active data plan.
Quick tip
Taiwan has excellent WiFi infrastructure. If your carrier supports WiFi Calling, incoming calls route over WiFi at no roaming charge — activate the feature in your phone's settings before you leave.
Step by step
Taiwan eSIM: buy, install, activate
- Check your phone supports eSIM (iPhone XS or newer, most Samsung Galaxy S20+) — 5G coverage is widespread on Chunghwa Telecom
- Pick a data size for Taiwan on Airalo, which prices from $4.50 a gigabyte — payment takes under two minutes and your QR code arrives instantly. Compare providers if you want to see alternatives first.
- Install the eSIM via the QR code Airalo sends to your email — do this before your flight to Taiwan Taoyuan International Airport (TPE) so it activates the moment you land
- On iPhone: tap Settings > Cellular, select your carrier SIM (not the Airalo eSIM), tap Cellular Data Options, and set Data Roaming to off. Full instructions with screenshots in the data roaming guide.
- On Samsung Galaxy at Taiwan Taoyuan International Airport (TPE): open the notification shade, tap the SIM switcher, and select your Airalo eSIM — Chunghwa Telecom registers automatically
- On Google Pixel: go to Settings > Network > Calls and SMS > WiFi Calling and enable it — your home number stays reachable in Taiwan without any voice roaming charge
Data tips
Data-saving tips for Taiwan
Three ways to stretch your data in Taiwan: download offline maps (Google Maps lets you save entire cities), use WhatsApp for messaging instead of SMS (minimal data), and avoid streaming video on cellular (1 GB/hour). Social media browsing uses about 80 MB/hour. Navigation with live maps uses roughly 50 MB/hour.
Regional context
What Asia roaming agreements mean for Taiwan visitors
A few things to know before turning off carrier roaming in Taiwan:
Taiwan SIM registration: Passport required for tourist SIM purchase. A travel eSIM purchased abroad bypasses local SIM registration requirements at the point of sale.
SIM vending machines at airport and MRT stations
Free iTaiwan public WiFi network available to tourists
110V power — same as US/Japan, no adapter needed for US travelers
Excellent WiFi in cities; free iTaiwan public WiFi network available Roaming passes charge $12/day to fill WiFi gaps. An eSIM covers the same connectivity at $4.50/GB.
Nearby
Related destinations
6 destinations near Taiwan are priced on the same rate card. AT&T bills $12 a day in every one of them, and the figure beside each flag is that destination's own per-gigabyte floor. The cheapest of the group is Bangladesh at $1.25 a gigabyte.
Forgot your eSIM?
Taiwan eSIM installation after arrival: the WiFi route
The fastest emergency option in Taiwan: turn on AT&T cellular data long enough to download the Airalo app. The app download is approximately 5 MB. At AT&T's $2.05/MB pay-per-use rate, that download costs $10. Once the app is installed, turn carrier data back off. Connect to Taiwan Taoyuan International Airport (TPE)'s free WiFi, buy a Taiwan eSIM plan, and scan the QR code. Your eSIM on a local network then handles all data at $22.50 for 5GB. The $10 carrier charge is a one-time cost, not a daily fee. AT&T's International Day Pass costs $12 for that same day and $12 again for every day after it.
Savings math
How much you save in Taiwan
Solo traveler
A solo traveler on AT&T International Day Pass in Taiwan for 10 days: 10 days × $12/day = $120. A 15GB eSIM on a local network costs $67.50 for the same 10 days. Savings: $52.50 (44%). Both options connect to local 5G towers. The arithmetic is simple: one fixed payment versus 10 daily charges.
Family trip
A family that takes two international trips per year saves $60 annually by switching from AT&T roaming to eSIMs. Per trip: AT&T bills $300 for 4 lines over 10 days ($12 for the first line and $6 for each extra line, per day billed). Four eSIMs cost $270 per trip. Over five years, the cumulative savings reach $300.
AT&T roaming rate analysis
AT&T bills International Day Pass per line, not per account. A family plan with 4 lines in Taiwan: $12 for the first line and $6 for each of the other three = $30/day. For 10 days: $300. Even lines that barely use data still trigger the full daily charge. A child's phone syncing a game update overnight starts a $6 extra-line fee for that line. Four 15GB eSIMs: $270 total. Savings for the family: $30.
All-carrier summary
AT&T: AT&T International Day Pass costs 78% more than an eSIM for Taiwan.
Verizon: Verizon TravelPass costs 78% more than an eSIM for Taiwan.
T-Mobile: T-Mobile's International Passes cost less than this eSIM plan for Taiwan.
The savings math for Taiwan is clear. Solo: $52.50 saved vs AT&T for 10 days. Family of four: $30 saved. Annual (2 trips): $105 saved. All figures use the same local 5G network. The eSIM costs less at every trip length and every group size.
Quick answers
Common questions about Taiwan data costs
Is eSIM cheaper than roaming in Taiwan?
In Taiwan, a travel eSIM on a local network costs $67.50 for 15GB over 10 days. AT&T roaming charges $12 a day, $120 for the same duration on the same towers. The eSIM cuts the data bill by 44%. This applies to both AT&T and Verizon, which charge the same $12/day rate. Rates checked June 2026.
How much does roaming cost in Taiwan?
AT&T roaming in Taiwan costs $12 for each 24 hours from the first time your phone connects to a local network. The charge triggers on background data sync at landing, not intentional use. A 10-day trip costs $120. An eSIM: $67.50 flat. Rates checked June 2026.
Does T-Mobile work in Taiwan?
Yes, T-Mobile connects to a local network in Taiwan. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. The 1 Day International Pass costs $10. A travel eSIM at $67.50 for 15GB provides full 5G speed on the same local towers. Rates checked June 2026.
AT&T fine print for Taiwan
$12 covers 24 hours from the first time your phone uses a foreign network, and a single background push notification at 2 AM can start it. AT&T bills at most 10 daily fees per line each bill cycle (terms read 31 Oct 2026).
iCloud Photos, email push, app updates all trigger the daily charge. A phone left in a bag with data roaming on starts a new $12 fee each time a sync lands after the last 24 hours ran out.
Taiwan FAQ
Taiwan eSIM & roaming questions
Taiwan carrier roaming costs $12 a day on AT&T and on Verizon
AT&T: $12/day, or $84 a week. Verizon: $12/day. T-Mobile: 5GB or 15GB of high-speed data included on Experience plans, then at a reduced speed, or $10 for a 1 Day pass with 2GB. Travel eSIM on a local network: from $4.50/GB. On the median 5 GB plan, fixed rates run from $2.01/GB on HelloRoam to $2.60/GB on Saily. HelloRoam's 7-day unlimited plan has the lowest median of the five at $21.50 across 35 countries, against $27.50 on Holafly. Every option above routes through the same local towers in Taiwan. Difference for 7 days against AT&T on that HelloRoam plan: $62.50. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
T-Mobile's included data in Taiwan runs at high speed until the allowance ends
Not past the allowance. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. A photo message runs 2 MB to 4 MB, about two minutes at 256Kbps, so it drags from Taiwan. A travel eSIM delivers full 5G on a local network from $4.50/GB, and HelloRoam at $2.01/GB holds the lowest median 5 GB rate in the market, Nomad next at $2.30. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Taiwan roaming bills by the day, not by the gigabyte
Relying on hotel WiFi does not prevent roaming charges in Taiwan. AT&T's per-day charge fires from any background cellular contact — your phone does not need an active app, just a brief tower handshake. Per-MB billing at $2.05/MB is even more dangerous with background syncs. T-Mobile sidesteps per-day billing up to its plan's high-speed allowance, then runs at up to 256Kbps. A travel eSIM at $4.50/GB gives you full 5G and locks the total cost before you board.
Coverage lists decide which provider suits a Taiwan trip with extra stops
HelloRoam, first on this site's rubric, does not sell Taiwan, so this leg needs another provider even though HelloRoam holds the lowest median 5 GB rate here, $2.01/GB, across its 185 destinations. For a route that adds stops, check each list before the price: Airalo reaches 200+ destinations, Nomad 200 and Holafly 200+. This site states no Saily count. That breadth is worth paying for only when the itinerary is still moving. A regional plan covering several countries in one bucket beats one plan per stop. AT&T sidesteps the question by charging $12 per 24 hours in every country alike, which is simple and expensive: three countries over nine days still bills $108. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Carrier roaming beats an eSIM in Taiwan on one-day stops and voice-only trips
Three cases, and they are real. First, T-Mobile does not charge for data in Mexico and Canada up to its plan's high-speed allowance, and nothing priced here beats free. Second, if you need your own number live for calls and texts without WiFi, a day pass does that and a data-only travel eSIM does not. Third, if you use almost no data, one AT&T day at $12 can beat buying a whole plan for a single overnight stop. Outside those three the arithmetic favors the eSIM in Taiwan: $84 for a week on AT&T against $47.25 at $4.50/GB on Chunghwa Telecom. Rates checked June 2026.
The three US carriers price Taiwan roaming on different terms
None of the three US carriers offer a genuinely good deal in Taiwan. AT&T: $12/day. Verizon: $12/day. T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $10 for a 1 Day pass. A travel eSIM on Chunghwa Telecom starts at $4.50/GB — a 7-day trip at average usage costs $47.25 versus $84 for AT&T. No carrier matches the eSIM on per-GB cost.
A week of Taiwan data costs $84 on AT&T
AT&T International Day Pass: $12/day, $84 for 7 days. Verizon TravelPass: $12/day, $84. T-Mobile International Pass: $10/day, $50. The base T-Mobile tier costs nothing but runs too slow to be usable. Against T-Mobile's $10/day pass, a travel eSIM on Chunghwa Telecom runs roughly $47.25 for 7 days at 1.5 GB/day average usage. The eSIM is 80-90% cheaper than any paid carrier option.
Local Taiwan apps run on a travel eSIM without a local SIM
Most local apps in Taiwan — ride-hailing, food delivery, transit — do not require a local SIM number to function. They require only a data connection, which a travel eSIM provides at $4.50/GB on a local 5G network. Some banking and two-factor authentication apps require a local phone number for SMS verification. For those cases, keep your home SIM active alongside the eSIM — your home number handles SMS while the eSIM handles data.
One eSIM can cover a multi-country Asia route including Taiwan
Multi-country Asia eSIM plans exist and cover many combinations — Japan, South Korea, Thailand, Singapore, and others in a single data bucket. AT&T and Verizon charge $12/day in each country separately, so a 3-country trip at 3 days each costs $108. A regional Asia eSIM for the same 9 days runs $15-$40 total. Check plan coverage maps — Taiwan may be included in a regional plan, or you may need a Taiwan-specific plan plus a regional one.
A week of Taiwan carrier roaming costs $84
AT&T: $84/week (International Day Pass at $12/day). Verizon: $84/week (TravelPass). T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $50 for a week of passes (10-day pass). The cheapest eSIM for Taiwan starts at $4.50/GB on a local 5G network — better per-GB value than all three carriers.
Fact check
What carriers say vs. what your bill shows in Taiwan
You need to unlock your phone to use an eSIM
eSIM installation does not require an unlocked phone in most cases. iPhones sold in the US since iPhone 14 are sold unlocked by law. iPhones XS through 13 require unlocking to add a foreign carrier eSIM, but AT&T, Verizon, and T-Mobile all offer free unlocking after your contract ends. Samsung Galaxy S20 and newer models support eSIM on both locked and unlocked variants. Check your carrier's unlock policy before your trip to Taiwan.
Roaming charges only apply to data
US carrier international plans charge separately for data, calls, and texts. AT&T's International Day Pass at $12/day includes data but charges $0.25–$1.50/minute for calls beyond the bundled allocation. Incoming voicemail retrieval can trigger per-minute roaming charges even when you make no outgoing calls. A data-only eSIM in Taiwan at $22.50 covers data and uses WhatsApp or FaceTime for voice at no additional carrier cost. Rates checked June 2026.
EU roaming is free for Americans
EU roaming-within-the-EU rules apply only to SIM cards issued by EU-based carriers. AT&T and Verizon are US carriers — they charge full international day pass rates in every EU country. AT&T's International Day Pass runs $12/day in EU destinations. Verizon TravelPass is $12/day. A travel eSIM on a local network covers Taiwan for $22.50 total. Rates checked June 2026.
Our recommendation
Taiwan cost analysis: bottom line
For heavy data users in Taiwan: Taiwan is a thin eSIM market and we could not price a plan tier here. Airalo and Holafly each list 200+ destinations, the highest count this site prints, so it is among the likeliest of the five to stock Taiwan on a local network. Holafly is the alternative, at 200+ destinations with a 180-day refund window if the plan turns out not to cover you.
Learn more
Travel guides, Taiwan
4 guides carry the parts of a Taiwan trip this page does not price: installing the profile before departure, switching data roaming off on the home SIM, and what happens to the allowance once a fair-use policy applies. Each one reads the same rate card as this page, where AT&T bills $12 a day.
AT&T charges $12/day in Taiwan. eSIM data starts at $4.50 a gigabyte.
Taiwan eSIMs reach the same local networks carrier roaming reaches. The eSIM bills $4.50 a gigabyte; the carrier bills $12 a day.
Get a Taiwan eSIM