True Ventures co-founder Jon Callaghan doesn’t think we’ll be using smartphones the way we do now in five years — and maybe not at all in 10.
For a venture capitalist whose firm has had some big winners over its two decades – from consumer brands like Fitbit, Ring, and Peloton, to enterprise software makers HashiCorp and Duo Security – that’s more than armchair theorizing; it’s a thesis on which True Ventures is actively betting.
True hasn’t gotten this far by following the crowd. The Bay Area firm has largely operated under the radar despite managing roughly $6 billion across 12 core seed funds and four “select,” opportunity-style funds that it has used to pour more capital into portfolio companies that are gaining momentum. While other VCs have grown more promotional – building personal brands on social media and podcasts to attract founders and deal flow – True has gone in the opposite direction, quietly cultivating a tight network of repeat founders. The strategy seems to be working: according to Callaghan, the firm boasts 63 exits with gains and seven IPOs amid a portfolio of some 300 companies assembled over its 20-year history.
Three of True’s four recent exits in the fourth quarter of 2025 involved repeat founders who came back to work with the firm again after previous successes, says Callaghan. Still, it’s Callaghan’s thinking about the future of human-computer interaction that really stands out in a sea of AI hype and mega-rounds.
“We’re not going to be using iPhones in 10 years,” Callaghan says flatly. “I kind of don’t think we’ll be using them in five years – or let’s say something different that’s a little safer – we’re going to be using them in very different ways.”
His argument is simple: our phones are lousy at being the interface between humans and intelligence. “The way we take them out right now to send a text to confirm this or send you some message or write an email – [that’s] super inefficient, [and] not a great interface,” he explains. “[They’re] prone to error, prone to disruption [of] our normal lives.”
So sure is he of this that True has been spending years exploring alternative interfaces – software-based, hardware-based, everything in between. It’s the same instinct that led True to bet early on Fitbit before wearables were obvious, to invest in Peloton after hundreds of other VCs said ‘no thanks,’ and to back Ring when founder Jamie Siminoff kept running out of money and even the judges on “Shark Tank” turned him away. Each time, the bet looked questionable, says Callaghan. Each time, the bet was on a new way for humans to interact with technology that felt more natural than what came before.
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The latest manifestation of this thesis is Sandbar, a hardware device that Callaghan describes as a “thought companion” — or, in more mundane terms, a voice-activated ring worn on the index finger. Its singular purpose: capturing and organizing your thoughts through voice notes. It’s not trying to be another Humane AI Pin or compete with Oura’s health tracking. “It does one thing really well,” Callaghan says. “But that one thing is a fundamental human behavioral need that is missing from technology today.”
The idea isn’t to passively record ambient audio but to be there when an idea strikes, serving as a kind of thought partner. It’s attached to an app, leverages AI, and, according to Callaghan, represents a very different philosophy about how we should interact with intelligence.
What drew True to Sandbar founders Mina Fahmi and Kirak Hong wasn’t just the product, though. “When we met Mina, we were just absolutely aligned on vision,” Callaghan recalls. True’s team had already been thinking for years about alternative interfaces, making targeted investments around that possibility. They’d met with dozens of founders, as a result. But the approach of Fahmi and Hong – who previously worked together on neural interfaces at CTRL-Labs, a startup acquired by Meta in 2019 – stood out. “It’s about what [the ring] enables. It’s about the behavior it enables that we will very soon realize we can’t live without.”
There’s an echo here of Callaghan’s old line about Peloton: “It’s not about the bike.” To some, the bike – even its earliest iteration – was compelling. But Peloton was really about the behavior it enabled and the community it created; the bike was just the vessel.
This philosophy of betting on new behaviors — not just new gadgets — also explains how True has managed to stay disciplined about capital. Even as AI startups raise hundreds of millions at billion-dollar valuations out of the gate, True insists that it’s able to stick to what it does best, which is to write seed checks of $3 million to $6 million for 15% to 20% ownership in startups that it often gets to see first.
Callaghan says True will raise more money to fund what’s working, but he’s not interested in raising billions of dollars. “Like, why? You don’t need that to build something amazing today.”
That same measured approach colors his view of the broader AI boom. While he says (when asked) that he believes OpenAI could soon be worth a trillion dollars, and while he calls this the most powerful compute wave we’ve seen, Callaghan sees warning signs in the circular financing deals backing hyperscalers and their $5 trillion in projected CapEx spending on data centers and chips. “We’re in a very capital intense part of the cycle, and that is worrisome,” he notes.
That said, he’s optimistic about where the real opportunities lie. Callaghan thinks the greatest value creation is ahead of us – not in the infrastructure layer but in the application layer, where new interfaces will enable entirely new behaviors.
It all comes back to his core investing philosophy, which sounds almost romantic — the kind of pitch-perfect VC wisdom that would ring hollow from most people: “It should be scary and lonely and you should be called crazy,” Callaghan says about early-stage investing done right. “And it should be really blurry and ambiguous, but you should be with a team that you really believe in.” Five to ten years later, he says, you’ll know if you were on to something.
Either way, based on True’s track record of betting on hardware that many others missed – fitness trackers, connected bikes, smart doorbells, and now thought-capturing rings – it’s worth paying attention when Callaghan says the phone’s days are numbered. Being early is the whole point — and the trend lines support his thesis: the smartphone market is effectively saturated, growing at barely 2% annually, while wearables — smartwatches, rings, and voice-enabled devices — are expanding at double-digit rates.
Something’s shifting in how we want to interact with technology, and True is placing its bets accordingly.
Pictured above, Sandbar’s Stream ring. For much more from our conversation with Callaghan, tune in to the StrictlyVC Download podcast next week; new episodes drop every Tuesday.
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![This former notorious red-light district is now one of the world’s top AI hubs | TechCrunch
What every U.K. AI startup wants to know these days is, how can I get office space in King’s Cross?
The area is so hot that a VC firm allegedly recently won a deal by promising a founder office space in the neighborhood. “We stop at nothing to win deals [for] and to support” founders, “including helping them source office space when needed,” the firm told me when asked about the rumor, declining to confirm or deny any details.
The neighborhood’s popularity began back in 2016 when DeepMind — then newly acquired by Google — moved in. Soon after, a flood of AI startups followed, wanting to be around the Google DeepMind magic. Today, they hope to take advantage of the cluster of AI talent there.
This has transformed King’s Cross into one of the world’s top AI hubs, rivaled only by San Francisco and Beijing. Around London, it’s known by the sobriquet “Knowledge Quarter,” as it’s home to names like OpenAI, Meta, Isomorphic Labs, Cusp AI, Wayne, Recursive, and, a little farther down the road, Synthesia and Anthropic. The European Technology Network (ETN) just moved into a glossy new office nearby, while University College London sits around the corner.
Mixed in with the new developments are trendy food spots like Hoppers and BAO. Hop a train from King’s Cross, and founders can be in Cambridge in 45 minutes to source talent or can be in Paris in two hours to strike a deal.
Who would have guessed that a little more than 20 years ago, this was one of the seediest areas in London?
“In the ’80s, crack and heroin made the area a major narcotics market,” Hussein Kanji, an investor at Hoxton Ventures, said, recalling syringes in tree trunks and gangs patrolling the streets. “In 1982, the local church was occupied by the English Collective of Prostitutes for 12 straight days.” Then, in the early 2000s, a real estate developer had a dream and, well, “now it is the AI hotbed of the United Kingdom,” Kanji said. “What a change.” Around 18 months ago, his portfolio company BioCorteX moved from the neighborhood Holborn to the Jellicoe building in King’s Cross, hoping to be near the action. “Lots going on in London right now,” Nik Sharma, co-founder of BioCorteX, told me. “Lots of hyperscalers moving in.” That includes, reportedly, Jeff Bezos’ AI company Prometheus, which is also said to be in talks to move into the Jellicoe.
There are around 3,600 AI startups in London, which, together, have raised around .1 billion out of the .8 billion raised in the city since late July, according to Dealroom. Since the start of June, AI-related startups have leased more than 1 million square feet of office space in London, according to the real estate firm Knight Frank. With that, prime rents in King’s Cross have risen 18% over the past three years, Chris Dunn, a commercial insight associate at the firm, told me. That percentage represents only the largest leases encompassing at least 10,000 square feet, like the ones OpenAI and Prometheus are signing. The shorter deals go for even more, he said, and now the vacancy rate for conventional office space is just 0.9%. “Demand has outstripped supply,” he continued.
Today, one of the big topics of the area is sovereignty. It was a wake-up call for many when Anthropic shut off access to Mythos and Fable this summer, leaving some in the ecosystem to conclude: “We’d better look after ourselves,” Saul Klein, co-founder of the VC firm Phoenix Court, told me.
Phoenix Court is located in the King’s Cross area and has three portfolio companies in the vicinity, including Olix (which just announced a .3 billion valuation), Early Health and CoMind. Robin Klein, co-founder of the firm, said the shutdown of Fable and Mythos access was a “small but sharp reminder that Europe can’t simply rent its AI capabilities and capacity; it needs to build and hold some of its own.” King’s Cross, he said, is where much of this building is actually happening.
“The bigger question,” he continued, “is whether the U.K. builds the infrastructure, compute, energy, capital, to make this self-reliance durable, rather than just hosting outposts of U.S. labs.”
Image Credits:Phoenix Court
Top founders want to stay
Simon Kohl, founder of Latent Labs, has offices in King’s Cross and San Francisco. The London office, at the moment, is growing faster, and he’s more bullish than ever on the ecosystem, he said. “The mood right now feels less like London trying to catch up and more like London becoming one of the default places to start a serious AI company,” he said. Look around and you are likely to see Wayve testing its autonomous cars. Founded in 2017 by co-founder Alex Kendall, the unicorn is one of London’s biggest success stories.
“Ten years ago, building a frontier AI company from London felt like an unusual choice,” Kendall told me. “Now it feels like an obvious one.” Wayve moved into King’s Cross in 2018 looking for a space that could double as a garage — “a rare combination in Central London,” Kendall said. He has watched the ecosystem mature around him — and it’s now evident that a startup can stay in London, raise serious capital, hire world-class AI talent, and remain globally competitive, he said. Down the street from Anthropic’s new 158,000-square-foot office is the AI agent builder Sierra and the AI video platform Synthesia.
Laura Gonzalez Florez, Synthesia’s chief of staff and head of people, says the company moved into its glossy new office building a year ago to accommodate its growing team. They were drawn to the area for the same reason as everyone else: “It’s very close to the airport … very close to where a lot of investors are,” she said.
Image Credits:Synthesia
Around two-thirds of Synthesia’s engineers are remote, Gonzalez Florez said, letting the company tap into an affordable, international, and diverse talent pool and helping it scale faster. “From London, we can hire and work, without any problem, people from anywhere, from Slovenia to Portugal,” she said.
Unsurprisingly, London’s AI boom is also causing a talent war.U.K. AI job postings have skyrocketed in the past few years, per data from PwC. When Anthropic announced it moved into town earlier this year, it listed, for example, a salary range of £260,000 to £630,000 for a machine learning research engineer when the average salary in London for the same role is around £102,000. Some founders in the U.K., like those in Silicon Valley, are being forced to raise more and bigger rounds to keep up.
“The real test is whether more globally significant AI companies are founded, funded, and scaled from the U.K., while continuing to attract the world’s best talent to build them here,” Zain Ali, founder of the King’s Cross-based AI legal firm Centuro, told me. “If that continues to happen, King’s Cross won’t just be an AI hub. It’ll become one of the U.K.’s most important strategic assets.”
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.#Thisformernotorious #redlight #districtis #nowone #worlds #top #hubs #TechCrunchUK This former notorious red-light district is now one of the world’s top AI hubs | TechCrunch
What every U.K. AI startup wants to know these days is, how can I get office space in King’s Cross?
The area is so hot that a VC firm allegedly recently won a deal by promising a founder office space in the neighborhood. “We stop at nothing to win deals [for] and to support” founders, “including helping them source office space when needed,” the firm told me when asked about the rumor, declining to confirm or deny any details.
The neighborhood’s popularity began back in 2016 when DeepMind — then newly acquired by Google — moved in. Soon after, a flood of AI startups followed, wanting to be around the Google DeepMind magic. Today, they hope to take advantage of the cluster of AI talent there.
This has transformed King’s Cross into one of the world’s top AI hubs, rivaled only by San Francisco and Beijing. Around London, it’s known by the sobriquet “Knowledge Quarter,” as it’s home to names like OpenAI, Meta, Isomorphic Labs, Cusp AI, Wayne, Recursive, and, a little farther down the road, Synthesia and Anthropic. The European Technology Network (ETN) just moved into a glossy new office nearby, while University College London sits around the corner.
Mixed in with the new developments are trendy food spots like Hoppers and BAO. Hop a train from King’s Cross, and founders can be in Cambridge in 45 minutes to source talent or can be in Paris in two hours to strike a deal.
Who would have guessed that a little more than 20 years ago, this was one of the seediest areas in London?
“In the ’80s, crack and heroin made the area a major narcotics market,” Hussein Kanji, an investor at Hoxton Ventures, said, recalling syringes in tree trunks and gangs patrolling the streets. “In 1982, the local church was occupied by the English Collective of Prostitutes for 12 straight days.” Then, in the early 2000s, a real estate developer had a dream and, well, “now it is the AI hotbed of the United Kingdom,” Kanji said. “What a change.” Around 18 months ago, his portfolio company BioCorteX moved from the neighborhood Holborn to the Jellicoe building in King’s Cross, hoping to be near the action. “Lots going on in London right now,” Nik Sharma, co-founder of BioCorteX, told me. “Lots of hyperscalers moving in.” That includes, reportedly, Jeff Bezos’ AI company Prometheus, which is also said to be in talks to move into the Jellicoe.
There are around 3,600 AI startups in London, which, together, have raised around .1 billion out of the .8 billion raised in the city since late July, according to Dealroom. Since the start of June, AI-related startups have leased more than 1 million square feet of office space in London, according to the real estate firm Knight Frank. With that, prime rents in King’s Cross have risen 18% over the past three years, Chris Dunn, a commercial insight associate at the firm, told me. That percentage represents only the largest leases encompassing at least 10,000 square feet, like the ones OpenAI and Prometheus are signing. The shorter deals go for even more, he said, and now the vacancy rate for conventional office space is just 0.9%. “Demand has outstripped supply,” he continued.
Today, one of the big topics of the area is sovereignty. It was a wake-up call for many when Anthropic shut off access to Mythos and Fable this summer, leaving some in the ecosystem to conclude: “We’d better look after ourselves,” Saul Klein, co-founder of the VC firm Phoenix Court, told me.
Phoenix Court is located in the King’s Cross area and has three portfolio companies in the vicinity, including Olix (which just announced a .3 billion valuation), Early Health and CoMind. Robin Klein, co-founder of the firm, said the shutdown of Fable and Mythos access was a “small but sharp reminder that Europe can’t simply rent its AI capabilities and capacity; it needs to build and hold some of its own.” King’s Cross, he said, is where much of this building is actually happening.
“The bigger question,” he continued, “is whether the U.K. builds the infrastructure, compute, energy, capital, to make this self-reliance durable, rather than just hosting outposts of U.S. labs.”
Image Credits:Phoenix Court
Top founders want to stay
Simon Kohl, founder of Latent Labs, has offices in King’s Cross and San Francisco. The London office, at the moment, is growing faster, and he’s more bullish than ever on the ecosystem, he said. “The mood right now feels less like London trying to catch up and more like London becoming one of the default places to start a serious AI company,” he said. Look around and you are likely to see Wayve testing its autonomous cars. Founded in 2017 by co-founder Alex Kendall, the unicorn is one of London’s biggest success stories.
“Ten years ago, building a frontier AI company from London felt like an unusual choice,” Kendall told me. “Now it feels like an obvious one.” Wayve moved into King’s Cross in 2018 looking for a space that could double as a garage — “a rare combination in Central London,” Kendall said. He has watched the ecosystem mature around him — and it’s now evident that a startup can stay in London, raise serious capital, hire world-class AI talent, and remain globally competitive, he said. Down the street from Anthropic’s new 158,000-square-foot office is the AI agent builder Sierra and the AI video platform Synthesia.
Laura Gonzalez Florez, Synthesia’s chief of staff and head of people, says the company moved into its glossy new office building a year ago to accommodate its growing team. They were drawn to the area for the same reason as everyone else: “It’s very close to the airport … very close to where a lot of investors are,” she said.
Image Credits:Synthesia
Around two-thirds of Synthesia’s engineers are remote, Gonzalez Florez said, letting the company tap into an affordable, international, and diverse talent pool and helping it scale faster. “From London, we can hire and work, without any problem, people from anywhere, from Slovenia to Portugal,” she said.
Unsurprisingly, London’s AI boom is also causing a talent war.U.K. AI job postings have skyrocketed in the past few years, per data from PwC. When Anthropic announced it moved into town earlier this year, it listed, for example, a salary range of £260,000 to £630,000 for a machine learning research engineer when the average salary in London for the same role is around £102,000. Some founders in the U.K., like those in Silicon Valley, are being forced to raise more and bigger rounds to keep up.
“The real test is whether more globally significant AI companies are founded, funded, and scaled from the U.K., while continuing to attract the world’s best talent to build them here,” Zain Ali, founder of the King’s Cross-based AI legal firm Centuro, told me. “If that continues to happen, King’s Cross won’t just be an AI hub. It’ll become one of the U.K.’s most important strategic assets.”
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.#Thisformernotorious #redlight #districtis #nowone #worlds #top #hubs #TechCrunchUK](https://techcrunch.com/wp-content/uploads/2026/08/DM9A2852.jpg?w=680)

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