On Singtel and StarHub plans that do not include the destination, a week of data in Japan costs S$18 (US$14.09) with Singtel's ReadyRoam Asia 6GB and S$16 (US$12.53) with StarHub's DataTravel Asia-Pacific pack. 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 $3.89 in Japan at $2.82/GB, metered by the KB (Bcengi's prices are in US dollars). For this trip, Bcengi is about 3.5 times cheaper than Singtel and about 3 times cheaper than StarHub.
This page compares Singtel and StarHub packs on plans that do not include the destination: for a median week of data everywhere, and for a heavy week in the US only. Each carrier's prices are as listed on its own website, read October 4, 2026.
What Singtel and StarHub charge for data abroad
- Singtel: ReadyRoam Asia 6GB costs S$18 (US$14.09) for 30 days in 19 destinations, Japan and China among them; ReadyRoam Worldwide 6GB costs S$40 (US$31.32) for 30 days in 135 destinations, the US among them. ReadyRoam Neighbours 1GB costs S$5 (US$3.92) in neighboring countries, Malaysia and Thailand among them, and once it is used up, another 1GB at S$5 is added automatically. UnlimitedRoam Worldwide costs S$45 (US$35.24) for 14 days, with 15 GB at high speed.
- A median trip uses 1.38 GB of a 6 GB ReadyRoam pack, so more than three quarters of what you paid for is left unused when it expires; with two Neighbours 1GB packs (2 GB), nearly a third.
- StarHub: DataTravel Asia-Pacific costs S$16 (US$12.53) for 2 GB plus 6 GB under its 4X data promotion, 8 GB in all, valid 30 days, in destinations that include Japan, China, Thailand and Malaysia; DataTravel Global costs S$40 (US$31.32) for 8 GB on the same terms, the US among its destinations. The promotion runs until December 31, 2026.
- The trip uses 1.38 GB of StarHub's 8 GB pack, so more than four fifths of what you paid for is left unused when it expires.
What a 7-day trip costs: a roaming 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) and the 90th percentile (6.50 GB) from the usage report, times the country's rate on October 4, 2026, in US dollars.
Singtel ReadyRoam and UnlimitedRoam
- Japan rates: a median 7-day trip (1.38 GB at $2.82/GB) costs $3.89 with Bcengi. Against Singtel's ReadyRoam Asia 6GB, the trip is about 3.5 times cheaper.
- China rates: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi. Against Singtel's ReadyRoam Asia 6GB, the trip is about 6 times cheaper.
- United States rates: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi; at the 90th percentile (6.50 GB at $1.68/GB), $10.92. Against Singtel's ReadyRoam Worldwide 6GB, the median trip is about 14 times cheaper; against UnlimitedRoam Worldwide (14 days), the 90th percentile trip is about 3 times cheaper.
- Thailand rates: a median 7-day trip (1.38 GB at $1.81/GB) costs $2.50 with Bcengi. Against two of Singtel's ReadyRoam Neighbours 1GB packs, the trip is about 3 times cheaper.
- Malaysia rates: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi. Against two of Singtel's ReadyRoam Neighbours 1GB packs, the trip is about 3.5 times cheaper.
StarHub DataTravel
- Japan rates: a median 7-day trip (1.38 GB at $2.82/GB) costs $3.89 with Bcengi. Against StarHub's DataTravel Asia-Pacific pack, the trip is about 3 times cheaper.
- China and Malaysia: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi. Against StarHub's DataTravel Asia-Pacific pack, the trip is about 5.5 times cheaper.
- United States rates: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi; at the 90th percentile (6.50 GB at $1.68/GB), $10.92. Against StarHub's DataTravel Global pack, the median trip is about 14 times cheaper and the 90th percentile trip about 3 times cheaper.
- Thailand rates: a median 7-day trip (1.38 GB at $1.81/GB) costs $2.50 with Bcengi. Against StarHub's DataTravel Asia-Pacific pack, the trip is about 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.
Singtel and StarHub roaming questions
How much is a Singtel roaming package?
Singtel's ReadyRoam Asia 6GB costs S$18 and its ReadyRoam Worldwide 6GB S$40, each for 30 days; Singtel's ReadyRoam Neighbours 1GB, for neighboring countries such as Malaysia and Thailand, costs S$5.
How much is StarHub's DataTravel?
StarHub's DataTravel Asia-Pacific costs S$16 and its DataTravel Global S$40, each for 30 days, with 8 GB under StarHub's 4X data promotion until December 31, 2026.
How do I use a travel eSIM instead of Singtel or StarHub roaming?
Install the eSIM before you leave, set it as your data line, and turn data roaming off for your Singtel or StarHub 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 4, 2026. Rates can change; the pricing page always has the current ones.
Singapore dollar prices are converted to US dollars at the Federal Reserve's rate for September 25, 2026, 1.2771 Singapore dollars per US dollar.
Updated October 4, 2026. Sources: Singtel's roaming page and roaming rates PDF, and StarHub's DataTravel page; Federal Reserve exchange rates; Bcengi 2026 International Mobile Data Usage Report; Bcengi pricing page.
