Updated September 30, 2026 · TariffCue Editorial Team
Astound vs co:sim
What sets them apart
| Compare |  Astound |  co:sim |
|---|---|---|
| Seller type | Reseller | Mvno |
| Price from | $19.95 | $0.99Lower |
| Reference plan prices | 150 Mbps: $19.95/mo, 150 Mbps, no contract; 1 Gig WiFi: $40/mo, 1000 Mbps, no contract; 1.5 Gig WiFi: $60/mo, 1500 Mbps, no contract | 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) |
| Unlimited plan price | $30 | $13.99Lower |
| Host network | Not confirmed | local carrier networks |
| Wi-Fi calling | Yes | Not confirmed |
| EU roaming | Paid | Not confirmed |
| Roaming countries | Not confirmed | 200 to 240 |
| Data rollover | No | Not confirmed |
| Mid-contract price rises | Price for Life rate locked while service kept; other promos valid 12 mos then regular rates | Not confirmed |
| Credit check required | Yes | Not confirmed |
| Multi-line discount | Yes | Not confirmed |
| Markets | US | Not confirmed |
Same on both: SIM-only (Yes), 5G (Yes), eSIM (Yes), Hotspot sharing (Yes).
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Key differences
- Astound scores higher overall: 9.5 vs 9.4.
- Price from is lower at co:sim: $0.99 vs $19.95.
- Unlimited plan price is lower at co:sim: $13.99 vs $30.
- Support channels: only co:sim offers Email.
- Billing: only Astound offers Rolling.
- Billing: only co:sim offers Prepaid.
Our verdict on each
Astound
Astound suits US households that want matching download and upload speeds, a low entry price and no contract to be tied into, and the same account can carry mobile lines. Entry pricing starts at $19.95 a month, Gig tiers arrive with Whole Home WiFi included, and the setup fee is $0.
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.
Score breakdown
| Area | Astound | co:sim |
|---|---|---|
| Cost | 9.6HigherEntry price of $19.95 a month and a setup fee of $0 put cost near the top of the range. | 9.5Entry pricing leads the set: $0.99 to open a plan and $13.99 for unlimited daily data, with no contract on either. |
| Offer | 9.3HigherNo cancellation penalty; change or cancel anytime, and Whole Home WiFi arrives included with Gig plans. | 9.2Wide reach with everyday extras: 200 to 240 countries covered, eSIM delivery, hotspot sharing and sim only plans, all prepaid. |
Licences and countries
| Country | Astound | co:sim |
|---|---|---|
| Headquarters | United States | United States |
How they place
| Ranking | Astound | co:sim |
|---|---|---|
| Phone plans with eSIM | 15 of 389 | 12 of 389 |
Every fact side by side
| Fact | Astound | co:sim |
|---|---|---|
| Billing | Rolling | Prepaid |
| Contract length | 1 | Not confirmed |
| Legal entity | Radiate HoldCo, LLC d/b/a Astound Broadband | Comsand Inc. |
| Headquarters | United States | United States |
| Support channels | Phone, Chat, Help centre | Email, Chat, Phone, Help centreCovers more |
Where each stands against the rest
| Fact | Astound | co:sim | Median |
|---|---|---|---|
| Price from | $19.95above the median | $0.99lowest quarter | $5 |
| Unlimited plan price | $30above the median | $13.99lowest quarter | $25 |
| Roaming countries | Not confirmed | 200 to 240highest quarter | 100 |
Median across 176 listed providers.
Pros and cons
Astound
Pros
- Download of 5,000 Mbps matches upload of 5,000 Mbps, so sending a large file is as quick as downloading one.
- The setup fee is $0, and it ranks 1 of 86 on that measure, ahead of every other brand compared.
- Service runs on cable and fttp, so one provider can cover a cable street or a fibre to the home street.
Cons
- EU roaming is paid, so European travel is billed separately.
- Data rollover is no, so unused mobile allowance does not carry into the next cycle.
- A credit check is required on the mobile side, which adds a step before a line is active.
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.
Who each suits
Astound
Who it suits
- Households in US whose street already has cable or fibre to the home and who want equal download and upload speeds.
- Families adding mobile lines to the same account, where a multi line discount and rolling billing apply.
- Renters and short-stay households, since No cancellation penalty; change or cancel anytime.
Who should look elsewhere
- Buyers who want a fibre to the home provider and nothing else, because cable and fttp includes cable while Abissnet and Kinetic list fibre to the home alone.
- Homes a wired network does not reach, where EarthLink adds fttp, 5G and satellite options.
- Travellers who expect European roaming to come included, since EU roaming is paid.
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.
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
Country by country
| Country | Astound | co:sim |
|---|---|---|
| United States | Yes | No |
Questions about each
Astound
How much does Astound broadband cost a month?+
Plans start at $19.95 a month on the entry tier. The listed lineup then steps up through Gig and multi-Gig WiFi plans, and every plan shown is on no-contract terms, so the monthly figure is the whole commitment. Whole Home WiFi is included with Gig plans rather than sold as an extra.
Is there a setup or installation fee with Astound broadband?+
Setup costs $0 to add, and in this comparison the brand ranks 1 of 86 for setup fee, ahead of every other brand measured on that point. Equipment also counts: Whole Home WiFi is supplied with Gig plans, with the top tier hardware paired to the quickest speeds.
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.
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