Tesco Mobile charges 1p per MB in the United States, so a week's 1.38 GB is £13.80 ($18.29) with Tesco Mobile. For Sky Mobile customers without Free Global Roaming, Roaming Passport Plus is £2 a day, so 7 x £2 = £14 ($18.55) for a week with Sky Mobile. 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 $2.32 in the United States at $1.68/GB, metered by the KB. For this trip, Bcengi is about 8 times cheaper than Tesco Mobile and about 8 times cheaper than Sky Mobile.
This page covers Tesco Mobile in the United States, outside its Home From Home destinations, and Sky Mobile for customers without Free Global Roaming. Each carrier's prices are as listed on its own website, read October 3, 2026.
Tesco Mobile
Tesco Mobile charges 1p per MB of data in the United States, on pay monthly and pay as you go. A 7-day trip of 1.38 GB, 1,380 MB, is £13.80 ($18.29) with Tesco Mobile, and every MB is charged (Tesco Mobile's website, read October 3, 2026).
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 3, 2026.
- 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 Tesco Mobile's 1p per MB (£13.80 and £65), the median trip is about 8 times cheaper and the 90th percentile trip about 8 times cheaper.
Sky Mobile
Sky Mobile's Roaming Passport Plus is £2 a day for your UK plan in Spain, France, Italy, the United States and Turkey, so 7 x £2 = £14 ($18.55) for a week with Sky Mobile (Sky Mobile's website, read October 3, 2026). Sky Mobile charges each day you use your phone abroad, however little data the day uses, and the data comes out of your UK plan.
- United States rates: a median 7-day trip (1.38 GB at $1.68/GB) costs $2.32 with Bcengi. Against 7 days of Sky Mobile's Roaming Passport Plus (£14), the median trip is about 8 times cheaper.
- Spain, France and Italy: a median 7-day trip (1.38 GB at $1.19/GB) costs $1.64 with Bcengi; at the 90th percentile (6.50 GB at $1.19/GB), $7.74. Against 7 days of Sky Mobile's Roaming Passport Plus (£14), the median trip is about 11 times cheaper and the 90th percentile trip about 2.5 times cheaper.
- Turkey rates: a median 7-day trip (1.38 GB at $1.54/GB) costs $2.13 with Bcengi. Against 7 days of Sky Mobile's Roaming Passport Plus (£14), the median trip is about 8.5 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.
UK carrier roaming questions
How much is Tesco Mobile roaming in the United States?
Tesco Mobile charges 1p per MB of data in the United States, on pay monthly and pay as you go.
How much is Sky Mobile roaming?
Sky Mobile's Roaming Passport Plus is £2 a day in its destinations, for customers without Free Global Roaming.
How do I use a travel eSIM instead of roaming?
Install the eSIM before you leave, set it as your data line, and turn data roaming off for your Tesco Mobile or Sky Mobile 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.
Pound prices are converted to US dollars at the Federal Reserve's rate for September 25, 2026, 1.3250 US dollars per pound. Tesco Mobile's per-MB price is counted at 1,000 MB to the GB.
Updated October 3, 2026. Sources: Tesco Mobile's roaming page; Sky Mobile's roaming page and tariff guide; Federal Reserve exchange rates; Bcengi 2026 International Mobile Data Usage Report; Bcengi pricing page.
