KnowRoaming review

Updated September 30, 2026 · TariffCue Editorial Team · Facts checked September 30, 2026

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Our verdict

KnowRoaming sells prepaid sim-only eSIM data for travellers who want to buy a plan, use it and walk away, and the USA Unlimited daily plan at $3.50 makes a single heavy-use day cheap. Coverage spans from 200 countries, though the monthly unlimited option is where the range gets expensive.

Key facts

Best for
Travellers buying prepaid eSIM data for a multi-country trip, especially for a day of heavy use.
Seller type
Reseller (Source, checked September 30, 2026)
SIM-only
Yes (Source, checked September 30, 2026)
Price from
$1.75 (Source, checked September 30, 2026)
Reference plan prices
USA Unlimited 30 Days: US $68.00, unlimited data, prepaid 30 days (no 12-month 30 GB+ SIM-only plan offered); USA Unlimited 1 Day: US $3.50, unlimited data, prepaid 1 day; USA 1 GB 7 Days: US $3.89, 1 GB, prepaid 7 days (Source, checked September 30, 2026)
Unlimited plan price
$3.50 (Source, checked September 30, 2026)
eSIM
Yes (Source, checked September 30, 2026)
Roaming countries
from 200 (Source, checked September 30, 2026)
Support channels
Help-centre (Source, checked September 30, 2026)
Billing
Prepaid
Official website
knowroaming.com

Pros and cons

Pros

  • Both sim-only and eSIM are offered, so nothing is posted and no store visit is needed, which suits a traveller already carrying a compatible handset.
  • Coverage of from 200 countries lets a multi-stop trip stay with a single provider instead of changing SIMs at each border.
  • Billing is prepaid, so every purchase is a set figure with no renewal step and no minimum term to serve out.
  • KnowRoaming is a reseller set up for travel data, while co:sim and BambooSIM run as mobile virtual network operators.
  • The USA Unlimited daily plan at $3.50 buys a whole day of unlimited data without a longer commitment.

Cons

  • Support runs on help centre only, so a connection that fails overnight leaves a help centre to sort it out.
  • KnowRoaming is a reseller rather than a mobile virtual network operator, so a network fault has to be traced through another party; co:sim and BambooSIM answer as their own operators.
  • The monthly USA Unlimited option costs many times the entry figure of $1.75, so a full month of heavy use is the expensive end of the range.
  • Each top-up is a separate prepaid purchase, so a long trip means paying again at every interval rather than settling one monthly amount.
KnowRoaming

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Scored 9.1 / 10 by TariffCue.

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Who it suits

  • Travellers already holding a compatible handset who want data only, bought digitally with no delivery wait.
  • Anyone covering a multi-country trip from a single provider, given coverage of from 200 countries.
  • Readers who plan a trip day by day and want unlimited data for a single heavy-use moment rather than a capped monthly allowance.

Who should look elsewhere

  • Readers who would rather deal with the network's own operation, since co:sim and BambooSIM run as mobile virtual network operators.
  • Shoppers who want the lowest starting figure, since ESIMZON starts at $1 against KnowRoaming's $1.75.

Pricing

KnowRoaming's eSIM data plans start at $1.75, which is the figure to anchor any trip budget on, while the USA Unlimited daily plan sits at $3.50 for a full day of unlimited data. Put side by side, both show the shape of the range: a small amount of data for a short window, or a day's heavy use for a similar outlay. They are set prices rather than an introductory rate that later renews higher, so what a reader sees is what a reader pays. Budget a single purchase per stay instead of assuming a monthly bill will cover the trip.

What it does well

Both sim-only and eSIM are offered, so the product is a data plan for a handset already in your pocket, delivered digitally with nothing to post and no counter to visit. Coverage is the wider selling point: KnowRoaming serves from 200 countries, so a traveller crossing several borders can stay with a single provider rather than buying a local SIM on arrival. Sim-only also keeps the cost tied to data alone, with no handset attached to the plan.

Where it sits among rivals

KnowRoaming ranks 5 of 15 on the entry price, so its starting figure sits in the cheaper part of the field rather than at the front. On unlimited data the picture changes: the USA Unlimited daily plan ranks 2 of 7 among the brands compared on that measure. Both rankings together describe a brand that competes hard on small top-ups and moves to the front once unlimited data is the thing being compared.

How KnowRoaming compares

Frequently asked questions

What does a KnowRoaming plan cost to start with?+

KnowRoaming's eSIM data plans start at $1.75, the entry figure for its lightest option. It is a set price rather than an introductory rate that renews higher, and billing is prepaid, so a reader can work out the whole spend for a trip before buying anything.

How much does unlimited data cost?+

The USA Unlimited daily plan is $3.50 for a full day of unlimited data, which is the figure most useful for anyone planning a trip day by day. The monthly unlimited option is priced far above that, so longer stays work out better with a smaller allowance topped up alongside it.

Is KnowRoaming a network or a reseller?+

KnowRoaming is a reseller of mobile data rather than a mobile virtual network operator, so the network behind the service belongs to someone else. Support runs on help centre, which matters more in that arrangement, where a fault has to be traced through another party. Readers who prefer the network's own operation can compare co:sim instead.

Is the plan an eSIM or a physical SIM?+

Both sim-only and eSIM are offered, so the plan is delivered digitally to a compatible handset rather than posted as a card. Nothing needs collecting and no store visit is involved. KnowRoaming covers from 200 countries, so the same digital setup carries across a trip with several stops.

Which countries does KnowRoaming cover?+

KnowRoaming's roaming data reaches from 200 countries, wide enough for a journey with several borders. Destinations are bought as separate prepaid plans, so the country list is the item to check before booking rather than the plan name. Breadth of coverage, not the size of a single allowance, is the main draw.

Is there a contract or a minimum term?+

Billing is prepaid, so each purchase covers the period chosen and then ends, with no renewal step and no minimum term to serve out. The longer unlimited option runs as a prepaid period of days rather than a rolling contract, so a reader can stop at any point without penalty.

How do I get help if a plan stops working?+

Support runs on help centre, so questions are answered through a help centre rather than a phone line or live chat. That is workable for setup questions before departure. An in-trip connection problem is harder, because a fault on the host network has to be traced through a reseller rather than the network's own team.

Is KnowRoaming cheaper at entry than ESIMZON?+

Both sit close together: KnowRoaming starts at $1.75 and ESIMZON at $1, so the gap at entry is small. KnowRoaming's stronger figure is unlimited data, where the daily USA Unlimited plan is $3.50. Readers shopping on unlimited use should weigh that plan rather than the headline starting price.

Sources

  • knowroaming.com checked September 30, 2026

    Backs: Roaming countries, Support channels

    “Get instant, affordable data in 200+ destinations”

  • knowroaming.com/esims checked September 30, 2026

    Backs: Price from, Seller type

    “Bulgaria: eSIM data plans for Bulgaria from US $1.75”

  • knowroaming.com/esims/usa checked September 30, 2026

    Backs: Billing, ESIM, Reference plan prices, SIM-only, Unlimited plan price

    “Prepaid travel eSIM data plans for USA”

Compiled from 3 source pages, checked September 30, 2026. We did not open an account.

Not confirmed yet: Contract length.

KnowRoaming

KnowRoaming

Travellers buying prepaid eSIM data for a multi-country trip, especially for a day of heavy use.

9.1/10Visit

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