Updated September 30, 2026 · TariffCue Editorial Team
KnowRoaming vs Strong eSIM
Where KnowRoaming and Strong eSIM differ
| Compare |  KnowRoaming |  Strong eSIM |
|---|---|---|
| Seller type | Reseller | Mvno |
| Price from | $1.75Lower | $3.50 |
| 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 | 1) Cheapest 30 GB+ 12-month SIM-only: not offered, all plans are prepaid with 7 or 30 day validity and no contract. 2) Cheapest unlimited: Global Unlimited, $14.90 per travel day, unlimited data (2 GB/day at full speed then reduced), per-day prepaid. 3) Cheapest overall: local/regional starter, $3.50, 1 GB, 7 days prepaid. |
| Unlimited plan price | $3.50Lower | $14.90 |
| Roaming countries | from 200 | 197 |
| Host network | Not confirmed | local partner carriers |
| 5G | Not confirmed | Yes |
| Data rollover | Not confirmed | No |
| Hotspot sharing | Not confirmed | Yes |
Same on both: SIM-only (Yes), eSIM (Yes).
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- KnowRoaming scores higher overall: 9.1 vs 8.9.
- Price from is lower at KnowRoaming: $1.75 vs $3.50.
- Unlimited plan price is lower at KnowRoaming: $3.50 vs $14.90.
- Support channels: only Strong eSIM offers Email, Chat.
Our verdict on each
KnowRoaming
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.
Strong eSIM
Strong eSIM sells prepaid travel data rather than a monthly phone plan, and it suits anyone who wants a short, pay-as-you-go SIM for one trip instead of a contract. Entry pricing starts at $3.50 for a local or regional starter plan, bought in the destination and used for a fixed stretch of days.
Score breakdown
| Area | KnowRoaming | Strong eSIM |
|---|---|---|
| Cost | 9.5HigherEntry price of $1.75 and unlimited data at $3.50 put KnowRoaming near the front of both price measures. | 8.8Entry at $3.50 and a per travel day unlimited plan at $14.90 cover both short and long trips. |
| Offer | 8.7Sim-only eSIM plans across from 200 countries, sold on prepaid billing by the day. | 9.1HigherPrepaid terms throughout, eSIM, fifth generation data, hotspot sharing and 197 countries in one catalogue. |
Which one suits you
Pick KnowRoaming if cost, price from, and unlimited plan price matter most.
Pick Strong eSIM if offer matter most.
The numbers side by side
| Fact | KnowRoaming | Strong eSIM |
|---|---|---|
| Price from | $1.75 | $3.50 |
| Unlimited plan price | $3.50 | $14.90 |
| Roaming countries | from 200 | 197 |
If neither fits
ESIMZON has unlimited plan price at $2.90, against $3.50 for KnowRoaming and $14.90 for Strong eSIM.
ESIMZON reviewHow they place
| Ranking | KnowRoaming | Strong eSIM |
|---|---|---|
| Phone plans with eSIM | 8 of 389 | 10 of 389 |
Every fact side by side
| Fact | KnowRoaming | Strong eSIM |
|---|---|---|
| Billing | Prepaid | Prepaid |
| Legal entity | Not confirmed | StrongeSIM LLC |
| Headquarters | Not confirmed | United States |
| Support channels | Help centre | Email, Chat, Help centreCovers more |
Where each stands against the rest
| Fact | KnowRoaming | Strong eSIM | Median |
|---|---|---|---|
| Price from | $1.75below the median | $3.50below the median | $5 |
| Unlimited plan price | $3.50lowest quarter | $14.90below the median | $25 |
| Roaming countries | from 200highest quarter | 197highest quarter | 100 |
Median across 176 listed providers.
Pros and cons
KnowRoaming
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.
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.
Strong eSIM
Pros
- Entry at $3.50 buys a prepaid starter plan with no contract term, so a short trip costs little and ends cleanly.
- Coverage runs on local partner carriers across 197 countries, so one eSIM can carry a multi-country itinerary.
- Hotspot sharing and fifth generation data come with the same prepaid plans, so tethering and faster speeds need no add-on.
Cons
- Data rollover is listed as no, so an allowance left unused is gone when a prepaid plan runs out.
- Every plan is prepaid on a short validity, so there is no long contract over which to spread the cost of steady use.
- Support runs on email, chat and help centre, with no phone line listed for problems that need a voice.
Who each suits
KnowRoaming
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.
Strong eSIM
Who it suits
- Backpackers and short-break travellers who want a prepaid eSIM live in the destination, starting at $3.50.
- Anyone crossing several countries on one trip, with service on local partner carriers across 197 countries.
- People with eSIM-capable handsets who need data and hotspot sharing without signing up to a contract.
Who should look elsewhere
- Travellers who prefer a reseller's own package list can look at ESIMZON, a reseller, rather than an mvno catalogue.
- Long stays with heavy usage are better weighed against KnowRoaming, a reseller, before committing, since Global Unlimited bills $14.90 for each travel day.
- Shoppers who want help by phone, since support runs on email, chat and help centre only.
Current offers
Strong eSIM
Current offer
Discount code
10% off your first plan with code STRONG10: 10% off first plan
Use code STRONG10 when buying the first eSIM plan
Source, checked September 30, 2026
Bonus
New members: 3GB Global Package for $2.99: $2.99 for 3 GB
Exclusive for New Members, store widget, global package
Source, checked September 30, 2026
Questions about each
KnowRoaming
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.
Strong eSIM
What does Strong eSIM cost at the start?+
Entry sits at $3.50 on a prepaid local or regional starter plan with a small data allowance and a short validity. Global Unlimited is $14.90 for each travel day and is also prepaid by the day. Nothing renews on its own, so the cost of a trip is worked out before you buy rather than at renewal.
Is there a monthly or contract plan?+
Every plan is prepaid on a short validity, so there is no monthly bill, no contract term and nothing to cancel. You buy the days you expect to need, and the plan ends when the validity does. Longer stays are handled by taking a fresh plan rather than by setting up a recurring one.