Updated September 30, 2026 · TariffCue Editorial Team
co:sim vs ESIMZON
What sets them apart
| Compare |  co:sim |  ESIMZON |
|---|---|---|
| Seller type | Mvno | Reseller |
| Host network | local carrier networks | Partner networks incl. AT&T, O2, Orange, Rogers, TIM, T-Mobile, Verizon, Vodafone |
| Price from | $0.99Lower | $1 |
| Reference plan prices | Global (117 areas) unlimited daily data: $13.99, unlimited daily data, no contract, 1-365 days; Global (117 areas) 20GB 30 days: $135.99, 20GB total data, no contract; cheapest plan overall: single-destination Data Only eSIM from $0.99, data varies, no contract (no 12-month or 30GB+ plans listed) | UK data eSIM 1GB 30 Days: $2 per plan, 1GB, prepaid no contract; UK unlimited eSIM 1 Day: $4.28 per plan, unlimited, prepaid no contract; UK unlimited eSIM 30 Days: $55.99 per plan, unlimited, prepaid no contract (no 12-month or 30GB+ monthly plans listed) |
| Unlimited plan price | $13.99 | $2.90Lower |
| Roaming countries | 200 to 240Higher | 130 |
| Hotspot sharing | Yes | Not confirmed |
Same on both: SIM-only (Yes), 5G (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
- Price from is lower at co:sim: $0.99 vs $1.
- Unlimited plan price is lower at ESIMZON: $2.90 vs $13.99.
- Roaming countries is higher at co:sim: 200 to 240 vs 130.
- Support channels: only co:sim offers Phone.
Our verdict on each
co:sim
co:sim suits travellers who want a prepaid eSIM with wide reach and a low starting price, and plans open at $0.99. It is a data-only setup, so the eSIM, hotspot sharing and sim only options suit people who manage their own data rather than expect a handset with the plan.
ESIMZON
ESIMZON suits travellers who want prepaid eSIM data on partner networks with nothing owed after the trip, and its strength sits at the unlimited end of the range. Unlimited plans start at $2.90, while support runs on email, chat and help centre rather than by phone.
Score breakdown
| Area | co:sim | ESIMZON |
|---|---|---|
| Cost | 9.5Entry pricing leads the set: $0.99 to open a plan and $13.99 for unlimited daily data, with no contract on either. | 9.9HigherEntry from $1 and unlimited from $2.90, ranking 1 of 7 on unlimited price. |
| Offer | 9.2HigherWide reach with everyday extras: 200 to 240 countries covered, eSIM delivery, hotspot sharing and sim only plans, all prepaid. | 8.9Sim only and eSIM throughout, coverage of 130 countries, but a reseller model and email, chat and help centre support. |
Pick co:sim if, pick ESIMZON if
Pick co:sim if offer, price from, and roaming countries matter most.
Pick ESIMZON if cost and unlimited plan price matter most.
Where they rank in our lists
| Ranking | co:sim | ESIMZON |
|---|---|---|
| Phone plans with eSIM | 12 of 389 | 4 of 389 |
If neither fits
AirTalk Wireless has unlimited plan price at $0, against $13.99 for co:sim and $2.90 for ESIMZON.
AirTalk Wireless reviewWhere these facts come from
co:sim
- cosim.io: 14 facts, checked September 30, 2026
ESIMZON
- esimzon.com: 12 facts, checked September 30, 2026
Every fact side by side
| Fact | co:sim | ESIMZON |
|---|---|---|
| Billing | Prepaid | Prepaid |
| Legal entity | Comsand Inc. | Not confirmed |
| Headquarters | United States | India |
| Support channels | Email, Chat, Phone, Help centreCovers more | Email, Chat, Help centre |
Where each stands against the rest
| Fact | co:sim | ESIMZON | Median |
|---|---|---|---|
| Price from | $0.99lowest quarter | $1lowest quarter | $5 |
| Unlimited plan price | $13.99lowest quarter | $2.90lowest quarter | $25 |
| Roaming countries | 200 to 240highest quarter | 130above the median | 100 |
Median across 176 listed providers.
Pros and cons
co:sim
Pros
- Entry at $0.99 puts co:sim at the front of the price ranking: 1 of 15.
- Reach of 200 to 240 countries with hotspot sharing, so one data plan can carry a phone and a laptop across a long route.
- Sim only eSIMs on prepaid billing, so nothing is locked into a contract before the trip: prepaid.
Cons
- Billing is prepaid only, so a long trip has to be bought and paid for up front rather than spread over a contract.
- Unlimited daily data costs $13.99 against an entry price of $0.99, so wide-area cover for a long route sits well above the figure a plan list opens with.
- Of the email, chat and phone on offer, phone is the least common: 18.8% of the listings here include it, against 93.8% for the help centre.
ESIMZON
Pros
- Unlimited plans start at $2.90, the strongest figure in that column of our data.
- Entry plans start at $1, and the UK range is prepaid with no contract, so a plan can end with the trip.
- Coverage spans 130 countries, so one plan covers a multi-country trip.
Cons
- It works as a reseller, so the host network behind a plan is picked for you rather than chosen.
- Support runs on email, chat and help centre, with no phone line for problems that matter while a trip is already under way.
- Billing is prepaid, so the range holds no long monthly plan for anyone who wants one steady recurring bill.
Who each suits
co:sim
Who it suits
- Travellers crossing several countries who want a prepaid eSIM and hotspot sharing.
- People who plan their own data and pay as they go, since billing is prepaid with no contract attached.
- Anyone with an eSIM-ready handset who wants a sim only plan.
Who should look elsewhere
- Travellers after a named local partner in a single country, such as a Japan trip, where BambooSIM runs on Local partner networks, e.g. KDDI (au) and SoftBank in Japan.
- Shoppers who prefer a reseller setup, since ESIMZON is reseller and KnowRoaming is reseller.
- Buyers who want a monthly contract to renew: billing is prepaid, and the listed plans carry no contract.
ESIMZON
Who it suits
- Travellers who install an eSIM before departure and want a plan that ends with the trip: entry plans start at $1 with no contract.
- People crossing several borders on one plan, since coverage spans 130 countries across partner networks.
- Readers who already own a handset and want data only, because the range is sim only and esim.
Who should look elsewhere
- Readers who want an MVNO rather than a reseller, such as co-sim, since ESIMZON works as a reseller.
- KnowRoaming, which lists entry at $1.75, if you would rather weigh a different price list, or BambooSIM, an mvno, if that model matters more to you.
- Anyone who needs a phone line, because support runs on email, chat and help centre and reaches you in writing only.
Current offers
co:sim
Current offer
Bonus
Free 1 GB eSIM for new customers: 1GB free eSIM valid 7 days at $0
New customers only, one per person; applied automatically at checkout, no code; sign-in with email and a valid payment card required for verification, nothing charged; 42 territories (one EU-33 roaming card plus 9 single-destination cards)
Source, checked September 30, 2026
Questions about each
co:sim
How much does a co:sim plan start at?+
The entry price is $0.99, and it belongs to a single-destination data-only eSIM rather than a wide-area plan. That makes it the figure that appears first in a plan list, but it is not the cost of staying online across a whole trip. Budget from the unlimited price for multi-country use.
How much is unlimited data on co:sim?+
Unlimited daily data costs $13.99. That plan covers a wide area list and runs without a contract, and it is the line most readers set against other sellers' unlimited plans. The gap between this figure and the entry price is the trade-off: unlimited removes the need to choose a data amount and moves the budget up.
ESIMZON
What is the cheapest way to get data in the UK from ESIMZON?+
Entry plans start at $1 and are prepaid with no contract, so nothing carries into the next period. The capped-data UK eSIM plan is the lighter option, while the UK unlimited eSIM plans suit heavier use. On our price data, entry sits at 2 of 15 brands.
How much do the unlimited plans cost?+
Unlimited plans start at $2.90, and ESIMZON ranks 1 of 7 brands on that figure. The UK eSIM page lists those unlimited plans alongside a capped-data plan, all prepaid with no contract. Longer monthly plans are not listed, so a heavy monthly user has fewer options here.