Open any of the boxes shipping out of SIMO's South San Francisco warehouse and you will find something that looks like a small bar of soap. It is called Solis Edge. It weighs 137 grams. It costs $209. It has no SIM card slot, and yet it offers fast internet in 140-plus countries the moment you press the button.
That little soap bar is the visible part of the company. The invisible part is bigger and stranger: a software-defined SIM that ships inside Acer laptops, MediaTek chipsets, Rivian vehicles and the IoT fleets of carriers like Orange. Roughly six million connected devices use it. Roughly forty petabytes of mission-critical traffic move through it. Most of the people who rely on SIMO have never heard the name.
This is, in 2026, what mobile connectivity actually looks like when nobody is selling you a contract.
An old industry, hiding in a new century.
The cellular business has a peculiar habit: it asks the device to do the apologizing. Travel across a border and your phone goes quiet. Switch carriers and you swap a fingernail-sized chip. Build a fleet of sensors that has to roam, and you sign forty-seven contracts in nineteen jurisdictions and hope the bills arrive in a language you read.
SIMO's founders thought this was, politely, ridiculous. Networks should compete for the device, they argued, not the other way around. Why should the SIM card - a 1991 invention designed to identify a single subscriber on a single network - decide how the internet of 2026 works?
Above: a thesis short enough to fit on the back of a business card, which it occasionally does.
One engineer, one chip you never see.
In 2009, a former Asia-Links executive named Jing Liu started a company called Skyroam in San Francisco. The product was a small portable hotspot for travelers. The bet was that the chip inside it - a virtual SIM, software where the silicon had been - would eventually matter more than the plastic shell around it.
For most of the 2010s, it looked like a travel-gadget company. Skyroam units showed up on cruise ships, in Sahara expeditions, on rental car dashboards. Fifteen million people used them. The patents quietly piled up.
Then, around 2020, the rebrand. Skyroam became SIMO. The shell mattered less. The chip mattered more. The travel gadget had been a Trojan horse for an infrastructure company.
Above: the kind of pivot you can only see clearly once you stop selling the original product to airports.
A short biography of a quiet company
Seventeen years, three offices, one stubborn idea.
Two products, really. One you can hold.
The visible product is the Solis line - small, hard hotspots aimed at travelers and emergency-preparedness shoppers. Solis Edge for the carry-on minimalist. Solis Go for the power-bank-and-Wi-Fi-in-one crowd. Solis Pro for the road warriors who burn through bandwidth. Solis Hero for the budget-conscious. Solis Tag for the laptop bag that needs backup internet at all times. Different shells. The same brain.
The invisible product is that brain: the SIMO Intelligence Layer and SIMO Cloud. The Intelligence Layer is an AI-driven switcher that picks between 300-plus carriers in milliseconds based on signal, cost, latency and policy. The Cloud is the control plane an enterprise uses to manage thousands of devices without thinking about who their carrier is in any given country.
One product sells on Amazon. The other sells on quarterly OEM contracts. Both, eventually, do the same thing: take the SIM card out of the equation.
The scrapbook page of any connectivity company that has been doing this for more than a decade.
Customers and a chart.
You can argue with a pitch deck. It is harder to argue with a partner list. SIMO's logos read like a CES floor plan: MediaTek (chipset), Acer (laptops), Rivian (electric vehicles), Kyocera (devices), Orange (carrier), TD SYNNEX (distribution). Each one has a different reason to embed the vSIM, and each one is in production.
The numbers behind the logos: roughly $63.5 million raised across multiple rounds; an estimated $35 million in annual revenue; a team of around 270 across San Francisco, Shenzhen and Berlin; and a partner network that quietly covers most of the world's landmass.
Bars sized for storytelling, not auditing. Numbers are the company's own, and where they end is where the press releases stop.
Always-on, every device, no thinking.
SIMO's official mission - "AI-driven switching that ensures always-on connectivity across global deployments built for mission-critical operations" - is the kind of sentence written by people who have to talk to procurement officers. The human version is shorter: turn on the device, get the internet.
What that means in practice is a permanent argument with the carrier industry. Carriers prefer subscribers who stay put. SIMO is selling the opposite: devices that wander, switch, optimize, and never call home to a single network. It is selling, in effect, the right to forget who your carrier is.
Most infrastructure feels invisible once it works. Plumbing. Electricity. The DNS system you have never thought about until it broke. SIMO is building toward that kind of invisibility for cellular. The Solis hotspot in your bag and the vSIM in your next laptop are both early drafts.
The world is about to be connected by things that cannot wait.
The next decade of connectivity is not about phones. It is about vehicles, sensors, medical devices, payment terminals, drones, point-of-sale systems and the dull, mission-critical hardware that runs an economy when nobody is watching. None of these things can afford to lose signal at a border. None of them have time for a SIM swap.
That is the bet under SIMO's bet: that the world is moving toward a connectivity model where the device, not the carrier, decides what good service looks like. If they are right, the Solis hotspot is a souvenir from the transition - the part you can hold while the chip inside it eats the rest of the industry.
If they are wrong, they will have shipped one of the better travel gadgets of the decade. Not a bad worst case.
Back to the warehouse on Gateway Boulevard.
The box on the shipping pallet is still small. The device inside still weighs 137 grams. The logo is still yellow. The office is still on Gateway Boulevard. But the customer at the other end is no longer a tourist with a packing list. It is a Rivian engineer in Plymouth, a hospital procurement officer in Manila, a logistics manager in Rotterdam, an Acer product lead in Taipei. The soap bar travels. So does the chip inside it.
SIMO has not become famous. It has become useful. Which, for a company that quietly removed something from your phone before you noticed it was gone, is the better outcome.