Updated September 30, 2026 · TariffCue Editorial Team
KnowRoaming vs Simsima
What sets them apart
| Compare |  KnowRoaming |  Simsima |
|---|---|---|
| Seller type | Reseller | Mvno |
| Price from | $1.75 | $1.50Lower |
| 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 | Europe 20 GB: $23.98 per 30 days, 20 GB, 30-day prepaid | Europe Unlimited: $22.12 per 7 days, unlimited, 7-day prepaid | Europe 1 GB: $4.01 per 7 days, 1 GB, 7-day prepaid |
| Unlimited plan price | $3.50Lower | $22.12 |
| Roaming countries | from 200 | 190 |
| Host network | Not confirmed | Multiple local operators (Free Mobile, Orange France, Bouygues Telecom and others) |
| 5G | Not confirmed | Yes |
| EU roaming | Not confirmed | Included |
| Hotspot sharing | Not confirmed | Yes |
| Credit check required | Not confirmed | No |
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 8.8.
- Price from is lower at Simsima: $1.50 vs $1.75.
- Unlimited plan price is lower at KnowRoaming: $3.50 vs $22.12.
- Support channels: only Simsima offers Email.
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.
Simsima
Simsima suits travellers who want a prepaid eSIM covering Europe and a long list of other destinations, with entry prices from $1.50 and unlimited data sold as a weekly plan.
Score breakdown
| Area | KnowRoaming | Simsima |
|---|---|---|
| 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 $1.50 and the unlimited plan at $22.12 sit in the middle of the site's price field rather than at either extreme. |
| Offer | 8.7Sim-only eSIM plans across from 200 countries, sold on prepaid billing by the day. | 8.9HigherRoaming reaches 190 countries destinations, Europe roaming is included, and eSIM plus hotspot sharing come as standard. |
If neither fits
ESIMZON has unlimited plan price at $2.90, against $3.50 for KnowRoaming and $22.12 for Simsima.
ESIMZON reviewSources behind this comparison
KnowRoaming
- knowroaming.com: 9 facts, checked September 30, 2026
Simsima
- simsima.io: 16 facts, checked September 30, 2026
How they place
| Ranking | KnowRoaming | Simsima |
|---|---|---|
| Phone plans with eSIM | 8 of 389 | 13 of 389 |
Every fact side by side
| Fact | KnowRoaming | Simsima |
|---|---|---|
| Billing | Prepaid | Prepaid |
| Legal entity | Not confirmed | Dimitri MORVAN BRAHIM |
| Headquarters | Not confirmed | Spain |
| Support channels | Help centre | Email, Help centreCovers more |
Where each stands against the rest
| Fact | KnowRoaming | Simsima | Median |
|---|---|---|---|
| Price from | $1.75below the median | $1.50below the median | $5 |
| Unlimited plan price | $3.50lowest quarter | $22.12below the median | $25 |
| Roaming countries | from 200highest quarter | 190highest 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.
Simsima
Pros
- A credit check is not required, so an eSIM profile can be set up without one.
- Simsima sells as an MVNO, so it sits with the network-side sellers in this group while ESIMZON and KnowRoaming are both resellers.
- Billing is prepaid, so a trip-only top-up is possible and nothing has to run to a contract end.
Cons
- Support runs on email and help centre only, so a problem that needs a voice on the line waits on an email reply.
- On unlimited price it ranks 7 of 7 brands, which is the measure where it has least to show against its rivals.
- The terms name an individual, Dimitri MORVAN BRAHIM, as the legal entity, so the counterparty is a person rather than a corporate provider.
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.
Simsima
Who it suits
- Travellers crossing several European borders who want a prepaid eSIM they set up themselves.
- People who want European roaming included and a top-up rather than a contract.
- 5G users who also want hotspot sharing on the same profile.
Who should look elsewhere
- Anyone who wants to phone for help: support runs on email and help centre only, and KnowRoaming, a reseller, is the alternative to weigh.
- Buyers hoping for a discounted annual rate: billing is prepaid, so ESIMZON, a reseller, is the other name here.
- Anyone who needs a single named host network: co:sim describes its network as local carrier networks, the simpler proposition to weigh.
Current offers
Simsima
Current offer
Discount code
5% off first eSIM order with code WELCOME5: 5% off the first eSIM
Code WELCOME5 applied at checkout on the first eSIM order; does not combine with SimCoins cashback when a partner promo code is used
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.
Simsima
What does a Simsima plan cost to start?+
Entry pricing begins at $1.50, and every plan is bought as a prepaid top-up rather than a contract. That means the starting figure is the figure you pay, and the same amount applies when you refill, so there is no introductory rate that later renews higher. The unlimited plan is priced separately at $22.12.
Does signing up need a credit check?+
A credit check is not required, and the plans are sim only, so nothing is financed and no handset sits on the plan. The eSIM profile is created without a credit file being consulted, which keeps the route in short. It does not change the shape of the service, since billing stays prepaid and support stays on email and help centre.