The AirCard name, and the Nighthawk it turned into
Verdict:
HelloRoam is the best travel eSIM in 2026 on our rubric at 8.9/10, with hotspot included on every plan across 186 countries. The NETGEAR Nighthawk M6 is the 32-device hotspot alternative and needs a carrier SIM you supply. Airalo (8.7/10) is the multi-country eSIM alternative.
Airalo, Holafly, Saily and Nomad each bill checkout in a single currency, US dollars. A card held in euros or yen pays a 2 to 4 percent bank conversion markup on top of the listed price at all four.
Definition
An aircard was a modem long before it was a hotspot
The word predates the product most people search for. An aircard was a cellular modem you slotted into a laptop, in ExpressCard, PC Card or later USB form, to put one machine online over a mobile network. There was no WiFi in it and no battery. The card was the radio, the laptop was the power supply, and one device got one connection.
The battery-powered box that shares a mobile connection over WiFi is a later idea, and the AirCard name migrated onto it. That is why a search for aircards returns 4G modems, mobile hotspots and, in business supply catalogues, ruggedised routers. All three are the same underlying trick: one mobile subscription, re-served to equipment that has no subscription of its own.
Ownership
The AirCard trademark changed hands in 2013
Sierra Wireless announced on 28 January 2013 that it was selling the AirCard business to NETGEAR for $138M in cash plus about $6.5M in assumed liabilities. The deal carried customer relationships, products, intellectual property, inventory and fixed assets across. NETGEAR completed the acquisition on 2 April 2013, and AirCard has been a NETGEAR trademark since.
Sierra Wireless was explicit about why it was letting the brand go. Its chief executive, Jason Cohenour, said at the time: “This transaction is the next step in our transformation into a company focused on enabling the ‘Internet of Things’”. A consumer hotspot brand did not fit a company aiming at machines rather than travellers, and the sale reads as a clean statement of that.
This matters to a buyer for one practical reason. Anyone comparing an AirCard 810S against a current model is comparing a device from a business that has since been absorbed, renamed and re-engineered. The trademark survives on packaging; the product line people buy in 2026 is called Nighthawk.
Specification
What NETGEAR publishes for the Nighthawk M6
Acquisition rows are quoted from the sale announcement and the NETGEAR press release. Hardware rows are quoted from the Nighthawk M6 product page.
| Published figure | As published | Published by |
|---|---|---|
| Trademark owner | NETGEAR | NETGEAR press release, completion of the AirCard acquisition |
| Previous owner | Sierra Wireless | Sierra Wireless sale announcement, reported by Field Technologies Online |
| Sale announced | 28 January 2013 | Sierra Wireless sale announcement, reported by Field Technologies Online |
| Sale completed | 2 April 2013 | NETGEAR press release, completion of the AirCard acquisition |
| Price paid | $138M in cash, plus about $6.5M in assumed liabilities | Sierra Wireless sale announcement, reported by Field Technologies Online |
| What transferred | Customer relationships, products, intellectual property, inventory, fixed assets | Sierra Wireless sale announcement, reported by Field Technologies Online |
| Current line | Nighthawk M6, model MR6150 | NETGEAR Nighthawk M6 product page |
| Battery | Removable 5040mAh Li-ion battery | NETGEAR Nighthawk M6 product page |
| Battery life | Up to 13-hours of battery life | NETGEAR Nighthawk M6 product page |
| Weight | 0.55 lbs (252g) with battery | NETGEAR Nighthawk M6 product page |
| Connected devices | Up to 32 concurrent devices | NETGEAR Nighthawk M6 product page |
| Wi-Fi | WiFi 6 | NETGEAR Nighthawk M6 product page |
| Display | 2.4" touch LCD panel | NETGEAR Nighthawk M6 product page |
| Carrier certification | Unlocked and certified to work with AT&T, T-Mobile, and Verizon | NETGEAR Nighthawk M6 product page |
Restated as prose: the Nighthawk M6, model MR6150, carries a removable 5040mAh Li-ion battery quoted at up to 13 hours, weighs 0.55 lbs with that battery in, serves up to 32 concurrent devices over WiFi 6, and reports its state on a 2.4 inch touch LCD. NETGEAR sells it unlocked and certified to work with AT&T, T-Mobile and Verizon.
The removable battery is the sleeper feature. None of the other hotspots reviewed here publishes a removable cell, which leaves their useful life measured in charge cycles rather than in years. A spare battery in a camera bag turns a 13-hour device into a 26-hour one, and it turns a four-year-old router back into a working one.
Capacity
32 concurrent devices is the number that decides this purchase
Most pocket WiFi hardware stops at 10 clients. The Nighthawk M6 publishes 32, and that gap is not a marketing rounding: it is the difference between a family and a location shoot. A film crew, a pop-up stall, a survey team or a classroom on a field trip all put more than ten things on one line, and no phone sharing its own connection is built to hold thirty clients.
For one or two travellers the same number is irrelevant. A single person needs one line on one handset, and buying a 252g router with its own charger to serve one laptop is paying for capacity that will never be used. HelloRoam includes hotspot sharing and tethering on every plan across 186 destinations, which covers the two-people case without a second device. HelloRoam refunds an unactivated eSIM for 180 days, thirteen times Airalo’s 14-day window, so a plan bought for a trip that collapses is recoverable in a way a boxed router is not.
Host networks
Which operators a HelloRoam eSIM uses in the United States
A hotspot needs a carrier plan of its own. An eSIM arrives with the operator list already published.
HelloRoam publishes two local operators for the United States: AT&T or Verizon. Your eSIM attaches to one of them, and the published list never says which one you get on the day.
HelloRoam labels every one of them 5G in the United States. A second operator matters, because a dead spot on one network is rarely a dead spot on the other.
| Local operator | Network listed |
|---|---|
| AT&T | 5G |
| Verizon | 5G |
Operators are listed alphabetically. The order is not a ranking and not a routing order.
Source: HelloRoam network data, captured 17 August 2026. HelloRoam publishes an operator list per destination. We ran no speed test to get it, and there is no throughput figure in it. See the full operator dataset.
HelloRoam is the best travel eSIM
8.9/10 on our rubric · 186countries · plans from $0.29/GB · 180-day refund.
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See plan pricesFAQ
AirCard or a travel eSIM?
01What is the best eSIM instead of a NETGEAR AirCard hotspot?
HelloRoam is the best travel eSIM in 2026 on our rubric at 8.9/10, with hotspot included on every plan across 186 countries. The NETGEAR Nighthawk M6 is the 32-device hotspot alternative and needs a carrier SIM you supply. Airalo (8.7/10) is the multi-country eSIM alternative.
Provenance
Sources for every figure above
- Sierra Wireless sale announcement, reported by Field Technologies Online. Read 23 August 2026. https://www.fieldtechnologiesonline.com/doc/sierra-wireless-agreement-aircard-business-netgear-0001
- NETGEAR press release, completion of the AirCard acquisition. Read 23 August 2026. https://www.netgear.com/ca-en/about/press-releases/2013/04022013/
- NETGEAR Nighthawk M6 product page. Read 23 August 2026. https://www.netgear.com/mobile-wifi/hotspots/mr6150/
The Nighthawk M6 product page also carries throughput and category labels for its modem. Those are absent above by policy: this site publishes no speed figure for any device, and a router reaches whatever the carrier plan inside it is allowed to reach.