International travel in 2025 is a tricky business. That’s because there’s so much to worry about. Booked your tickets? Now, got to check whether the layover flight you booked requires a transit visa from the connecting country. Applied for the visa for the destination? Need to check if immigration is open 24/7, or you’ll be stuck at the airport at night for hours. The list doesn’t stop. And every time, I forget something, which often means my travel experiences involve running frantically through the airport. Another thing that has caused a lot of headaches is connectivity. Everyone needs a taxi from the airport to the hotel, and for that, you need data. Unfortunately, at most airports, I’ve only seen long queues to get a new SIM, which can sometimes take hours. Beyond that, buying a SIM at the airport is generally more expensive, making the overall experience less than ideal.
Fortunately, there is a solution to this headache, and that’s eSIM. As you may already know, eSIMs are just regular SIMs without the physical card. They function exactly the same and can be used in different countries. With an upcoming Vietnam trip, I decided to finally give eSIMs a go and chose Holafly for this test. These guys offer unlimited data plans in over 200 destinations, with no hidden charges or fuss.
Options
As mentioned, Holafly covers over 200 destinations spanning across North America, South America, Asia, Africa, Europe, Oceania, and even the Caribbean. For all these places, the company provides unlimited data, without a phone number. This means you can browse the web, watch content, and even make calls using apps like WhatsApp and Telegram.
In addition, if you’re planning to visit multiple countries, Holafly also offers regional eSIMs and a global option that provides connectivity in 110+ countries and starts at $9.90 per day. The cost per day decreases with a longer plan. And if you use my code FOSSBYTES, you get a 5% on your eSIM.
Beyond that, if your work requires you to travel to various countries each week, Holafly recently introduced a subscription, called Holafly Plans, with coverage in 160+ destinations. The 25GB plan costs $49.90, the unlimited data plan costs $ 64.90 monthly, and you can cancel the service at any time. It is important to note that this is an introductory price offer, and you can get 10% off for 12 months using the coupon FOSSBYTES.
Holafly’s eSIMs are not transferable, and, like every other eSIM, your phone must be unlocked to use the service. The eSIM does not work with carrier-locked phones, so be sure to check the compatibility before buying. Also, older phones might not have eSIM technology, so check Holafly’s website or app to see if your mobile is compatible. Fortunately, if you do end up purchasing an eSIM and it’s not compatible, Holafly offers a generous 6-month return policy, which also applies if you cancelled your travel plans. Plus, for any help, you can contact the company’s 24/7 multilingual customer support team, with real people, who’d be happy to assist you.
The Setup

To have a pleasant travel experience, I needed to set up the eSIM before the actual flight date. After all, nobody wants to be stuck using the airport wifi to install the eSIM. Fortunately, Holafly’s setup is actually simple. I headed to the Holafly website, searched for Vietnam, and bought a 15-day plan for a total of $50,90. However, you can configure it from 1 to 90 days if you wish.
From there, it was another straightforward journey to install it on my Android device, and there are multiple ways to do so. You can either set up manually, using the QR code or the Holafly app for a one-button install, available for iPhone users with iOS 17.4 or above. I went with the QR code route, and it took just a few minutes.
The Experience

Everything was set up a day before flying, and for the test, I was using my daily driver, the vivo X300 Pro. As soon as my plane touched down at Tan Son Nhat International Airport in HCMC, I was instantly connected to the service, with mobile data running. Naturally, the first order of business was to inform my parents since this was my first solo international trip, and they were obviously worried. I sent them a text, and it went pretty smoothly.
Once I got out of the plane, the next item on the list was immigration. If you aren’t already aware, immigration in Vietnam can take hours. However, there’s a fast-track paid service that helps you get past all this nonsense. Since my Vietnamese speaking skills are basically non-existent, I used ChatGPT as my translator, which, thanks to the connection, worked super fine.
After reaching the hotel, it was time to push Holafly’s connection to the limit. For that, I first started downloading the new episodes of Squid Game Season 3. They were done in just a few minutes, and I was also able to track my data usage using the Holafly app. I then ran a series of speed tests. On average, download speeds ranged from 45.6 Mbps to 56 Mbps, while upload speeds reached 39 Mbps. These speeds are pretty fine for just about anyone, since I could do everything from streaming content to playing PUBG with my friends. However, some streaming services like Netflix did not play well with the eSIM, thanks to the weird “this content is not available at your location” error, which I faced a couple of times. I also faced a couple of errors with the Holafly app, which crashed when tracking my data usage.
After spending a few days in Ho Chi Minh City, the next destination on my travel list was Tuy Hoa. I’m the kind of person who likes to stay away from the touristy places, and it seemed like the best of the bunch. I took a train from Saigon to the region. Since Vietnamese trains don’t have Wi-Fi on board, I was relying on the Holafly connection, which, barring a few desolate forest regions, worked really well. There was decent coverage for about 90% of my journey. Even in the super quiet town of Tuy Hoa, the speeds were the same as in the big city, and I had no problems on my few excursions out of the city and into the wild as well.
Verdict

Holafly’s eSIM service is really good for just about anyone, simply because you get unlimited data. Throughout my Vietnam trip, I never worried about finishing my daily data quota, and that’s a very reassuring feeling. Beyond that, you get really solid coverage across almost the entire globe, a simple setup with various options, a global eSIM for frequent travellers, excellent customer support, and a generous 6-month refund policy. Sure, the app can be a bit buggy at times, and some streaming services can freak out, but Holafly is still a fantastic travel companion. If you have a trip coming up, be sure to give it a try, and don’t forget to save some money using my code FOSSBYTES.
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#Holafly #eSIM #Vietnam #Weeks #eSIM #Service
![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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