Chunghwa Telecom's 2 GB roaming packs cost TWD 249 for 15 days in Japan, South Korea and Thailand, TWD 268 for 30 days in the United States and TWD 349 for 15 days in Hong Kong. Travel periods of 6 to 8 days used a median of 1.38 GB in Bcengi's 2026 sample. Paying as you go, that trip's 1.38 GB costs $2.50 in South Korea at $1.81/GB, metered by the KB. Bcengi is about 3 times cheaper for this trip.
This page compares Chunghwa Telecom's 2 GB roaming packs, at the prices it lists for buying online or in its app, with paying as you go, for travelers from Taiwan on a typical 7-day trip. Prices are as listed on Chunghwa Telecom's website, read October 3, 2026.
What Chunghwa Telecom charges for data abroad
- Japan, South Korea and Thailand: Chunghwa Telecom's 2 GB pack is TWD 249 for 15 days.
- The United States, Hawaii included: Chunghwa Telecom's 2 GB pack is TWD 268 for 30 days.
- Hong Kong: Chunghwa Telecom's 2 GB pack is TWD 349 for 15 days.
The trip uses 1.38 GB of the 2 GB pack, so nearly a third of what you paid for is left unused when the pack expires.
What a 7-day trip costs: a Chunghwa Telecom pack or paying as you go
Paying as you go with Bcengi, a trip costs what its data costs. Each line below is a model for a trip of 6 to 8 days: the median (1.38 GB) from the usage report, times the country's rate on October 3, 2026, against the smallest Chunghwa Telecom pack that covers it.
- Japan rates: a median 7-day trip (1.38 GB at $2.82/GB) costs $3.89 with Bcengi. Against Chunghwa Telecom's 2 GB pack (TWD 249 for 15 days), the trip is about 2 times cheaper.
- South Korea and Thailand: a median 7-day trip (1.38 GB at $1.81/GB) costs $2.50 with Bcengi. Against Chunghwa Telecom's 2 GB pack (TWD 249 for 15 days), the trip is about 3 times cheaper.
- United States rates: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi. Against Chunghwa Telecom's 2 GB pack (TWD 268 for 30 days), the trip is about 3.5 times cheaper.
- Hong Kong rates: a median 7-day trip (1.38 GB at $1.81/GB) costs $2.50 with Bcengi. Against Chunghwa Telecom's 2 GB pack (TWD 349 for 15 days), the trip is about 4.5 times cheaper.
For how bundles and pay as you go compare, see bundles vs pay as you go.
What you get with Bcengi
- One reusable eSIM: install it once and use it on every trip.
- A balance that never expires: what one trip does not use is there for the next.
- No plan to pick: you never guess a size before you travel.
- Top up any time, by hand or with auto-refill.
- Your phone number stays on your home SIM for calls and texts; Bcengi is data only.
Chunghwa Telecom roaming questions
How much is Chunghwa Telecom roaming in Japan?
Chunghwa Telecom's 2 GB pack for Japan is TWD 249 for 15 days, and a median 7-day trip uses 1.38 GB of it.
How do I use a travel eSIM instead of Chunghwa Telecom roaming?
Install the eSIM before you leave, set it as your data line, and turn data roaming off for your Chunghwa Telecom line so it does not use data abroad. See turn roaming off on your home line.
How these figures were measured
The usage figures come from Bcengi's 2026 International Mobile Data Usage Report: a stratified random sample of 10,000 travel periods, with usage from January 1 to September 30, 2026. The figures cover every destination in the sample, not one country.
Each trip cost on this page is a model, not a bill: the GB a trip used times the per-GB rate on our pricing page on October 3, 2026. Rates can change; the pricing page always has the current ones.
Each comparison converts Taiwan dollars to US dollars at the Federal Reserve's rate for September 25, 2026, 31.82 Taiwan dollars per US dollar.
Updated October 3, 2026. Sources: Chunghwa Telecom's roaming plan pages for Japan, South Korea, the United States, Southeast Asia and Hong Kong; Federal Reserve exchange rates; Bcengi 2026 International Mobile Data Usage Report; Bcengi pricing page.
