Traveling the USA? Here's How to Land Already Connected

The United States is a big place to explore without reliable data — a road trip through three states, a subway ride in New York, a hike in Hawaii with no signage in sight. Local SIM cards mean a store visit, an ID check, and a plan you'll use for a week and then throw away. The Sigma Mobile USA eSIM skips all of that: buy it online, scan a QR code, and you're connected before you clear customs.

Coverage That Actually Matches Your Trip

Sigma Mobile's USA eSIM runs on Verizon and AT&T, two of the country's largest and most reliable networks, with 4G, LTE, and 5G speeds across the continental United States, Alaska, and Hawaii. Whether you're island-hopping in Hawaii, driving between Chicago and San Francisco, or navigating New York and Los Angeles, the coverage is built to follow you, not just the major cities.

Why Travelers Choose an eSIM Over a Local SIM

• No store visit, no ID paperwork. No eKYC required — buy online and you're done.
• Instant delivery. Your QR code arrives by email within minutes of checkout.
• Hotspot and tethering supported. Share your connection with travel companions or tether a laptop.
• Dual-SIM by design. Keep your home number active for calls, texts, and verification codes — this is a data-only eSIM, so apps like WhatsApp and Skype handle your calling needs while your primary line stays untouched.
• Flexible plans. Choose from 1 to 30 days, with data options from 500MB a day up to fully unlimited.
• No hidden fees. Transparent pricing from €1.65, with no surprise charges at checkout.

Setting It Up Before You Fly

1. Choose your days and data allowance and complete checkout.
2. Receive your QR code by email, usually within minutes.
3. Install the eSIM before departure if you like — just switch it off right after installing.
4. Turn on data roaming after you land, and your validity period starts exactly then.

That last step matters: the plan's validity begins the moment the eSIM connects to a network and starts using data, not when you install it. Installing in advance and activating on arrival means you get the full value of every day you paid for.

Built for How People Actually Travel the USA

Whether it's a two-week coast-to-coast itinerary, a business trip to New York, or a family vacation to Hawaii, the goal is the same: reliable Verizon/AT&T coverage, straightforward pricing, and a setup that takes minutes instead of an afternoon at an airport kiosk.

Ready to plan your trip? Get your USA eSIM here and stay connected coast to coast.

Also visiting Canada, Puerto Rico, or the US Virgin Islands? Sigma Mobile's USA, Hawaii, Puerto Rico, US Virgin Islands & Guam eSIM and Europe & USA (41 countries) eSIM extend coverage further for multi-destination trips.

Landing in Japan, Already Connected: The Complete Sigma Mobile eSIM Guide

Japan is a country best explored the moment you step off the plane — a vending machine to figure out, a train platform to navigate, a ramen shop to find down an alley with no English signage. None of that gets easier if the first hour of your trip is spent hunting for a SIM card counter at Narita or Haneda. The Sigma Mobile Japan eSIM removes that step entirely: your connection is ready before you even board.

Why Japan Rewards Travelers Who Land Connected

Japan's reputation for having some of the best mobile infrastructure in the world is well earned — but only if you're actually connected to it. From Tokyo's dense subway network to Hokkaido's rural stretches, the country's coverage is excellent, and Sigma Mobile's Japan eSIM is built to take full advantage of it.

Our plans run on both KDDI and Softbank networks, Japan's leading carriers, giving travelers double coverage rather than relying on a single operator. That matters more than it sounds: in a country where you might move from a Tokyo skyscraper to a mountain village in Nagano in the same week, having two strong networks behind your connection means fewer dead zones, not just faster speeds.

What You Actually Get

• Fast 4G, 5G, and 5G-Advanced data across most major cities and travel routes
• Unlimited data plans available, alongside flexible daily and total-data tiers
• Hotspot and tethering support — share your connection with travel companions or tether a laptop
• Instant delivery — your QR code arrives by email within minutes of checkout
• Dual-SIM compatible — keep your home number active for calls and verification codes while data runs on the eSIM
• Works with the apps you already use — Google, YouTube, Facebook, Instagram, and WhatsApp all function normally

Setting It Up Before You Fly

1. Choose your plan — pick the day range and data allowance that matches your trip.
2. Receive your QR code by email, typically within minutes of purchase.
3. Install it before departure, but don't activate yet — validity starts once the eSIM connects to a network.
4. Turn on data roaming after you land, and you're online.

That last step is worth repeating: installing early is fine and recommended, but activating early means paying for days you're not yet using. Land, switch on data roaming, and the clock starts exactly when it should.

Built for How People Actually Travel Japan

Whether it's a first-time trip through Tokyo, Kyoto, and Osaka, or a longer route through Hiroshima and Hokkaido, the plan is the same principle throughout: reliable coverage from two of Japan's strongest networks, transparent pricing, and zero time lost to store counters or paperwork.

Ready to plan your trip? Get your Japan eSIM here and land already connected.

Exploring more of the region afterward? Sigma Mobile's Asia 14 Countries eSIM extends the same instant connectivity across a wider multi-country route.

Sigma Mobile Is a Proud Sponsor of IBNS Shenzhen — Beyond Borders, Across Partners

Cross-border business in the Greater Bay Area doesn't happen in boardrooms alone. It happens in the conversations between sessions, the introductions made over coffee, and the follow-up messages sent from an airport lounge an hour after a meeting ends. That's the space IBNS — International Business Networking Shenzhen — was built to create, and it's why we're proud to be a sponsor of their flagship event, "Beyond Borders, Across Partners," on Saturday, 18 July 2026 at The Langham, Shenzhen.

What IBNS Brings to the GBA Business Community

IBNS describes its mission as structured cross-border engagement for business growth and collaboration — and the programme reflects it: keynote talks grounded in practical cross-border experience, panel discussions with companies, chambers, and professional service providers, institutional briefings featuring government and ecosystem representatives, and curated matchmaking among pre-screened participants.

It's the kind of event where a delegation from one country, a chamber of commerce from another, and a founder scaling into the region end up at the same table — which is exactly the environment where reliable, unrestricted connectivity stops being a convenience and starts being infrastructure.

Why Sigma Mobile Is a Natural Fit

Enterprises and professionals operating across mainland China, Hong Kong, and Macau face a specific connectivity problem that most eSIM providers don't solve: the Great Firewall restricts the everyday tools that cross-border business runs on — email, WhatsApp, Google Maps, cloud documents, video calls, and increasingly, AI tools used for research and drafting.

Our China, Hong Kong & Macau eSIM is built specifically for this environment:

• One eSIM profile across three jurisdictions. Mainland China, Hong Kong, and Macau on a single data plan — no swapping SIMs at the border between meetings.
• Genuinely unrestricted access. Data is routed so Google, WhatsApp, Gmail, Instagram, banking apps, and AI tools function the way they do outside China — no VPN required.
• Built for delegations, not just individuals. Hotspot and tethering support means one connection can serve a laptop, a colleague, or a small team on the move.
• Instant activation. A QR code arrives by email within minutes — ready before you land in Shenzhen, Hong Kong, or Macau.
• Dual-SIM compatible, so your existing business number and WhatsApp account stay active on the same device.

For sector delegations, investor roadshows, board-level visits, and the follow-up meetings that come after events like IBNS's, that's the difference between arriving ready to work and losing the first hour of a trip to a connectivity workaround.

Meet Us at Beyond Borders, Across Partners

📅 Saturday, 18 July 2026 📍 The Langham, Shenzhen — 7888 Shennan Blvd, Futian District 🕐 Day programme: 09:00–17:00 · Evening reception: 18:00–22:00

If you're attending as a delegate, chamber representative, or enterprise exploring the GBA, we'd welcome the chance to talk about how your team stays connected across the region — during the event and long after it.

Explore the China, Hong Kong & Macau eSIM ahead of the event, or find us on-site at IBNS Shenzhen.

Sigma Mobile's China-focused data products are intended for use by non-Chinese citizens staying in or travelling through Mainland China. Our other global eSIM plans are not subject to this limitation.

Sigma Mobile Is Now a Proud Member of Club France International (CFI)

Some communities are built around geography. Others are built around the people who choose to build a life far from home, together. Club France International is the latter — a network of French professionals and expats spanning Hong Kong and beyond, supporting each other through business, connection, and shared experience abroad.

We're proud to share that Sigma Mobile is now a member of CFI International / CFI Hong Kong.

Why This Membership Matters to Us

Connectivity is easy to take for granted until you're the one without it — standing at a border crossing between Shenzhen and Hong Kong, trying to explain a local SIM registration process in a language you don't speak, or watching WhatsApp fail to load the message from home that actually matters. For the expat and business community CFI represents, that friction is a familiar, recurring cost of living and working across the Greater Bay Area.

Joining CFI isn't just a partnership on paper. It's an opportunity to put Sigma Mobile's connectivity directly in front of the community it was built to serve — French professionals, entrepreneurs, and families navigating life between mainland China, Hong Kong, and Macau.

What Sigma Mobile Offers the CFI Community

Our China, Hong Kong & Macau eSIM is built specifically for this kind of cross-border life:

• One eSIM profile, three destinations. Mainland China, Hong Kong, and Macau covered on a single data plan — no swapping SIMs at the border.
• Unrestricted access. Data is routed so that Google, WhatsApp, Gmail, Instagram, banking apps, and everyday productivity tools work the way they do at home — no VPN required.
• Instant setup. A QR code arrives by email within minutes of purchase. Activate before you fly, or the moment you land.
• Dual-SIM friendly. Keep your existing phone number and WhatsApp account active on the same device while data runs on the eSIM.
• Hotspot and tethering supported, for sharing a connection with family or colleagues.

Whether it's a board meeting in Shenzhen, a weekend visiting family in Macau, or simply staying reachable for the people back in France, the goal is the same: connectivity that doesn't interrupt how you actually live and work.

An Exclusive Offer for CFI Members

As part of this membership, CFI members receive special conditions of any Sigma Mobile eSIM plan-  including our GBA-focused China, Hong Kong & Macau plan, as well as any of our 100+ other global destinations.

Looking Ahead

We're looking forward to being part of the CFI community — supporting events, sharing practical connectivity solutions, and getting to know the people who make up this network. If you're a CFI member and haven't tried Sigma Mobile yet, this is a good place to start.

Explore the China, Hong Kong & Macau eSIM or browse our full Asia lineup 

Sigma Mobile's China-focused data products are intended for use by non-Chinese citizens staying in or travelling through Mainland China. Our other global eSIM plans are not subject to this limitation.

How to Keep Using Claude in China: A GBA Traveler's eSIM Guide

You land in Shenzhen. You open Claude to review a contract before your first meeting. Nothing loads. You try again on the hotel Wi-Fi. Still nothing. For anyone who relies on Claude — to draft, research, translate, or think through a problem on the fly — mainland China's internet restrictions can turn a five-minute task into a lost afternoon.

That's the exact problem Sigma Mobile's China Mainland (Claude AI, Chat GPT, TikTok upgraded) eSIM was built to solve.

Why Claude Stops Working in China — and Why That Matters More Than People Expect

Mainland China's Great Firewall blocks or throttles most Western AI tools and platforms by default, Claude included. For business travelers, that's rarely a minor inconvenience: Claude is often the tool people use to review contracts, summarize meeting notes, draft emails, or think through a decision in real time. Losing access mid-trip means falling back on notes apps, memory, or waiting until you're back on a VPN — none of which are great substitutes when you need an answer now, in a meeting, in Shanghai.

What This eSIM Actually Changes

Sigma Mobile's GBA-focused eSIM runs on CMCC's 4G/LTE/5G network with genuinely unrestricted routing — not a VPN layered on top of a restricted connection, but a data path built to reach the tools travelers already rely on:

• Claude — draft, review, translate, and think through work exactly as you would at home
• ChatGPT and Perplexity — for research and quick lookups
• Google Maps, WhatsApp, Slack — the everyday tools that quietly stop working for most visitors
• TikTok — with upgraded performance for browsing and posting

No VPN to install, no server list to fiddle with, no throttled speeds working around a firewall from the outside. It's simply a connection that reaches these services directly.

Built for the Greater Bay Area

The plan is tuned for exactly where business travelers actually go: Shanghai, Shenzhen, and Guangzhou, with coverage extending across the wider CMCC network. Whether you're in back-to-back meetings in Shenzhen's tech district or reviewing a term sheet from a Shanghai hotel room, the connection — and Claude — are there when you open the app.

What You Get With the Plan

• Truly unlimited data options, alongside daily and total-data tiers from 500MB to 50GB
• Hotspot and tethering supported — connect a laptop or share with a colleague
• No eKYC required — skip the identity verification headache that slows down local SIM purchases
• Instant delivery — your QR code arrives by email within minutes of checkout
• Dual SIM by design — keep your home number active for calls while data runs on the eSIM
• Flexible durations — from 1 to 30 days, matched to your actual trip length

Setting It Up Before You Land

1. Choose your days and data and check out online.
2. Receive your eSIM QR code by email, usually within minutes.
3. Install it before departure — but keep it switched off until you land, since validity starts the moment it connects to a network.
4. Turn on data roaming after arrival, and Claude, along with everything else, is ready to go.

Work the Way You Normally Would — Even in China

The point of this eSIM isn't just "internet in China" — it's removing the one variable that otherwise forces travelers to change how they work the moment they land. If Claude is part of your normal workflow, there's no reason a business trip to Shenzhen or Guangzhou should be the exception.

Get the China Mainland (Claude AI, Chat GPT, TikTok upgraded) eSIM and keep working the way you already do.

Traveling beyond the mainland too? The China, Hong Kong & Macau eSIM and China, Hong Kong, Macau & Taiwan eSIM extend the same coverage across the wider Greater Bay Area and beyond.

Incredible India, Uninterrupted: Your Complete eSIM Guide to Traveling India in 2026

From the marble domes of Agra to the backwaters of Kerala, India is a country best experienced without the friction of hunting for a local SIM card at the airport. Long queues, ID paperwork, and unpredictable shop counters have traditionally been part of the "arrival tax" every traveler pays before they can even open Google Maps. The Sigma Mobile India eSIM removes that step entirely — connectivity that's ready before you even board.

Why India Deserves a Dedicated eSIM Strategy

India isn't a single destination — it's dozens of them. A trip might move from Delhi's Red Fort to Jaipur's Amber Fort, down to Agra for the Taj Mahal, out to the deserts of Rajasthan, and finally to Kerala's coastline or Mumbai's Marine Drive. That range makes network reliability, not just price, the thing that actually matters.

Sigma Mobile's India eSIM runs on Reliance Jio and Bharti Airtel — the country's two largest, most extensive networks — giving travelers dependable 4G, LTE, and 5G coverage across major cities and the tourist circuit, without switching carriers as you move between states.

What Makes This eSIM a Smart Choice for Travelers

• Instant delivery. Your QR code arrives by email within minutes of checkout — no store visit, no waiting in line on arrival.
• No eKYC required. India's local SIM registration process (eKYC) is notoriously slow for tourists. Sigma Mobile's eSIM skips it entirely.
• Hotspot and tethering supported. Share your connection with a travel companion or tether your laptop for work on the road.
• Dual SIM by design. Keep your home number active for calls and OTPs while data runs on the eSIM — ideal for banking apps and two-factor codes.
• Flexible plans. Choose from 1 to 30 days, with daily or total data caps up to unlimited, so short city breaks and long backpacking routes are both covered.

Coverage That Matches Where You're Actually Going

The plan is built around where travelers really go: Delhi, Mumbai, Bengaluru, Jaipur, Agra, Rajasthan, and Kerala, plus the wider network footprint beyond them. Whether it's navigating Old Delhi's markets, booking a tuk-tuk in Jaipur, or checking tide times on a Kerala houseboat, the connection is there before you need it.

Setting It Up: Simpler Than It Sounds

1. Buy online and choose your days and data allowance.
2. Receive your QR code by email — usually within minutes.
3. Scan and install before you fly, or right after landing.
4. Turn data roaming on once you've arrived, and you're connected.

One practical tip: if you install the eSIM before departure, switch it off immediately afterward. Validity only starts once the eSIM connects to a network and begins using data — so activating on arrival (rather than at home) makes sure you get the full value of your plan.

Built for How People Actually Travel India

India rewards travelers who can move freely — jumping into a rickshaw, changing plans mid-trip, translating a menu, or booking a last-minute train ticket. All of that depends on having data the moment you need it, not the moment a shop reopens. That's the gap Sigma Mobile's India eSIM is built to close: reliable Jio/Airtel coverage, transparent pricing from just a couple of euros, and zero paperwork between you and the connection.

Ready to plan your trip? Get your India eSIM here and land already connected.

Planning a wider South Asia route? Sigma Mobile also covers Pakistan, Kazakhstan, Kyrgyzstan, and Uzbekistan on a single regional plan — worth checking if India is one stop on a longer journey.

Why Sigma Mobile Is Becoming Asia's Go-To eSIM Provider in 2026

Asia isn't one trip — it's a dozen different countries, a dozen different networks, and, until recently, a dozen different connectivity headaches. Between Japan's ultra-reliable 5G, Singapore's status as a regional business hub, Cambodia's fast-growing tourist trail through Siem Reap and Phnom Penh, and China's uniquely restricted internet, travelers crossing Asia have historically needed a different SIM — and a different plan — for every border.

That's the gap Sigma Mobile was built to close. We've spent the past year focused almost entirely on the region, and it shows: from local single-country eSIMs to 12- and 14-country regional bundles, plus a specialist unrestricted plan for Mainland China, Sigma Mobile now covers more of Asia, more reliably, than most competitors offer.

Here's a look at why Asia has become our core market — and how to pick the right eSIM for your route.

The Case for an Asia eSIM Over a Local SIM Card

Buying a physical SIM at every airport used to be the default. It's slow, it's inconsistent in quality, and it means starting from zero at every border. An eSIM changes that equation:

• No airport queues or language barriers — your plan is installed before you even board.
• No roaming shock — a data bundle purchased in advance replaces unpredictable carrier roaming fees.
• Dual-SIM by design — keep your home number active for calls and OTPs while data runs on the eSIM.
• One QR code, multiple countries — regional plans mean you don't need to swap anything between Bangkok and Kuala Lumpur.

For a continent as connectivity-diverse as Asia, that flexibility is exactly what makes an eSIM strategy — rather than a single-country SIM — the smarter default.

Japan: 5G Reliability for Asia's Most-Visited Destination

Japan remains the single most popular Asian destination for international travelers, and its mobile infrastructure is famously excellent — but only if you're connected to it. The Sigma Mobile Japan eSIM runs on Japan's top-tier 5G/4G networks, giving visitors the same fast, consistent coverage locals rely on, from Tokyo's train platforms to rural Hokkaido.

Because installation happens before departure and activation only starts on first connection in Japan, travelers can set everything up at home and simply land, connect, and go — no counters, no paperwork, no vending machines to decode.

Singapore: The Region's Business and Transit Hub

Singapore is where a huge share of Asia itineraries start or connect through, whether for business, a stopover, or a standalone trip. The Sigma Mobile Singapore eSIM delivers dependable high-speed data across the city-state's dense, well-built network — ideal for professionals who need Zoom calls and cloud access to just work, and for travelers navigating Changi Airport, the MRT, and everything from Marina Bay to Sentosa.

For anyone routing onward through neighboring countries, the Singapore, Malaysia & Thailand eSIM and the wider Singapore, Malaysia, Thailand, Indonesia & Vietnam eSIM cover an entire Southeast Asia loop on a single plan.

Cambodia: Reliable Data for a Fast-Growing Travel Market

Cambodia has quietly become one of Southeast Asia's fastest-growing tourism markets, driven by Angkor Wat, Phnom Penh's expanding business scene, and the coastal towns opening up around Sihanoukville. Connectivity quality outside major cities can still be inconsistent for visitors relying on local providers, which is exactly the problem the Sigma Mobile Cambodia eSIM is built to solve — stable data coverage for temple-hopping, ride-hailing apps, translation tools, and staying in touch, without hunting for a local SIM vendor on arrival.

China: Sigma Mobile's Specialist Market

China is the market where an ordinary eSIM simply isn't enough — and it's the one where Sigma Mobile has invested the most. The Great Firewall blocks or throttles Google, WhatsApp, Instagram, YouTube, and Gmail for most visitors, and VPNs on local networks are unreliable at best.

The China Mainland eSIM runs on China Mobile's strongest network with full 5G in major cities, and — critically — with no VPN required. Everyday apps, banking, and communication tools work the way travelers expect them to, not the way the Firewall dictates. For heavier users who specifically need smooth ChatGPT and TikTok access alongside everything else, the upgraded China Mainland (ChatGPT, TikTok upgraded) eSIM adds even more headroom. And for anyone routing through the Greater Bay Area, the China, Hong Kong & Macau eSIM covers Shenzhen, Guangzhou, Hong Kong, and Macau on one plan.

This is also where Sigma Mobile's presence goes beyond the product page: the team recently represented the brand at MWC Shanghai 2026, showcasing exactly this kind of unrestricted-access engineering to an industry audience — a signal of how central China, and Asia more broadly, has become to the company's roadmap.

Multi-Country Asia Plans: One eSIM, an Entire Region

For travelers building a longer Asia itinerary rather than a single-country trip, Sigma Mobile's regional bundles are built to remove the swapping problem entirely:

• Asia 12 Countries eSIM — a broad regional bundle for multi-stop trips across Asia.
• Asia 14 Countries eSIM — extended coverage for longer, more ambitious routes.

Buy once, install once, and let the same eSIM reconnect automatically as you cross from one covered country into the next.

How to Choose the Right Asia eSIM Plan

• One country, short trip: a local plan like Japan, Singapore, or Cambodia gives the best price-to-performance ratio for that specific network.
• Regional itinerary: a multi-country bundle (Southeast Asia or the 12/14-country Asia plans) avoids buying and switching between separate eSIMs.
• China specifically: always choose a China-dedicated plan rather than a generic Asia bundle — the network requirements for unrestricted access are different from anywhere else in the region.
• Heavy data users: look for plans with hotspot/tethering support if you're sharing a connection across a family or travel group.

Every Sigma Mobile plan installs the same way: buy online, receive a QR code by email within minutes, and follow the step-by-step installation guide — no store visit required.

Sigma Mobile: Built Around Asia

Sigma Mobile didn't add Asia as one region among many — the region is where the majority of our newest plans, our China specialization, and our recent product investment are concentrated. Between single-country options for Japan, Singapore, and Cambodia, a dedicated unrestricted-access lineup for China, and 12- and 14-country regional bundles, it's a lineup built specifically around how people actually travel across Asia: multi-stop, multi-network, and increasingly VPN-free.

Browse the full lineup on the Asia eSIM collection page and find the plan that matches your route.

Questions about coverage for a specific country or itinerary? Our support team is happy to help you pick the right plan before you fly.

Sigma Mobile at MWC Shanghai 2026: Leading the Future of Seamless Asia eSIM Travel

June 24, 2026 — Shanghai, China

We are thrilled to announce that Sigma Mobile is participating in MWC Shanghai 2026, Asia’s premier mobile industry event, taking place from June 24–26 at the Shanghai New International Expo Centre (SNIEC).

As a trusted provider of high-speed global eSIM solutions, we’re here to connect with operators, distributors, technology partners, and industry leaders who share our vision of borderless connectivity.

MWC Shanghai brings together the brightest minds in mobile technology, 5G, AI, and next-generation connectivity. For Sigma Mobile, this is the perfect stage to highlight our specialized expertise in Asia eSIM solutions — particularly for one of the most challenging and high-demand regions: Mainland China, Hong Kong, Macau, and beyond.

Travelers and business professionals visiting Asia no longer need to worry about expensive roaming fees, physical SIM swaps, or unreliable connections. With Sigma Mobile’s eSIMs, users enjoy instant activation, reliable 4G/5G networks, and seamless coverage across China and key Asian destinations.

At our booth, visitors can discover:

• Premium Asia-Focused eSIM Plans — Including dedicated China Mainland eSIM, China + Hong Kong + Macau, and multi-country Asia bundles covering Singapore, Malaysia, Thailand, Vietnam, and more.
• 72-Country Global eSIM — Featuring strong China coverage with annual plans designed for frequent travelers and digital nomads.
• Enterprise & Operator Solutions — Scalable B2B eSIM solutions for telecom partners looking to offer better roaming alternatives.
• Future-Ready Connectivity Roadmap — While we excel in eSIM today, we are actively expanding our portfolio to deliver even smarter, more integrated connectivity solutions that go beyond traditional eSIM.

Our goal is simple: to make global connectivity as effortless as turning on your phone.

With years of hands-on experience optimizing eSIM performance in Mainland China (bypassing common connectivity frustrations), Sigma Mobile has become a go-to solution for:

• Tourists exploring the Great Wall, Shanghai, or the Greater Bay Area
• Business travelers needing stable connections for WeChat, Alipay, maps, and productivity apps
• Expats and remote workers across Asia

Instant delivery • Easy QR code activation • Hotspot/tethering support • Competitive pricing — all backed by reliable Tier-1 local networks.

Looking Beyond eSIM: Our Vision for the Future

While eSIM remains at the core of what we do, MWC Shanghai reinforces our ambition to evolve. We are exploring broader digital connectivity ecosystems — including enhanced IoT solutions, smarter data platforms, and integrated services that will redefine how people and businesses stay connected worldwide.

Participating in MWC Shanghai is more than an event for us — it’s a milestone in our journey to become the leading global connectivity enabler for Asia and beyond.

Join the Conversation

If you’re attending MWC Shanghai 2026, we’d love to meet you! Drop by our booth or reach out to schedule a meeting.

Have questions about our Asia eSIM plans or partnership opportunities? Contact us at cooperation@sigmamobile.eu.

Stay connected. Travel smarter.

— The Sigma Mobile Team

🌐 www.sigmamobile.eu

Traveling to Mainland China? Then you already know the biggest headache – staying properly connected. The Great Firewall makes everything from Google and WhatsApp to Gmail, YouTube, and Instagram either blocked or painfully slow. Most local SIM cards come with heavy censorship, and relying on a VPN is often unreliable and slow.

That’s exactly why we created our China Mainland eSIM at Sigma Mobile.

The Best eSIM for China Right Now

We offer fast, unrestricted mobile data on China Mobile’s network – the strongest and most reliable in the country. You get full 5G speeds in all major cities (Beijing, Shanghai, Guangzhou, Shenzhen, etc.) and solid coverage almost everywhere else.

The big difference? No VPN needed. Everything just works like at home. No throttling, no blocked apps, no annoying configurations. Google, ChatGPT, Instagram, YouTube, WhatsApp, banking apps – they all run smoothly and without restrictions.

Why Travelers and Business People Choose Sigma Mobile’s China eSIM:

• Blazing-fast 5G / 4G connection on China’s best network

• Completely unrestricted access to global services

• Hotspot/tethering allowed – share your connection with other devices

• Flexible data packages for any trip length

• Instant QR code delivery – activate it before departure or right after landing

• Works perfectly in dual-SIM mode (keep your regular number for calls and messages)

• Best price-to-performance ratio on the market

As specialists in Chinese mobile telecommunications, Sigma Mobile has spent years perfecting this solution. We combine the strongest local coverage with true international internet access.

How Simple Is It?

1. Buy the plan on our website

2. Get the eSIM QR code in your email within minutes

3. Scan and install it on your phone (iPhone 11 and newer, recent Samsungs, Pixels, and many more)

4. Turn it on when you arrive in China and you’re good to go

Important: The validity period only starts when you first connect in China, so you can safely install it in advance.

Who Is This eSIM Perfect For?

Whether you’re a tourist exploring China’s amazing cities and landscapes, a business traveler who needs reliable tools, a digital nomad, or traveling with family – this eSIM makes life much easier. The ability to create a hotspot is especially handy for groups.

Why Sigma Mobile?

China connectivity is our specialty. We focus on delivering the fastest, most reliable, and truly unrestricted service at fair prices. Thousands of satisfied customers have already chosen us for their trips to China.

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Ready to travel without connectivity stress?

Check out our China Mainland eSIM and grab the plan that fits your trip.

Questions? Our support team is always happy to help.

Safe travels and see you online in China! 🇨🇳

The Greater Bay Area (GBA) — encompassing Hong Kong, Macau, Shenzhen, Guangzhou, and surrounding cities — is one of the world’s most dynamic economic zones. Whether you’re an expat managing cross-border business deals or a tourist hopping between vibrant cities, staying connected without hassle is essential. Traditional solutions like multiple local SIMs, expensive roaming, or unreliable VPNs often fall short. That’s where Sigma Mobile’s China-Hong Kong-Macau eSIM stands out as the perfect single-card solution.

For expats living and working in the GBA:

• Daily commutes or business trips between Hong Kong, Shenzhen, and Macau often mean juggling networks and dealing with connectivity disruptions.
• In Mainland China, the Great Firewall typically blocks or slows access to Google, WhatsApp, YouTube, Instagram, Facebook, and essential work tools — forcing constant VPN use that can be slow, unstable, or even blocked.
• Managing separate SIMs for each region wastes time and money.

For tourists exploring the region:

• You want instant access to maps, ride-hailing apps, translation tools, and social media the moment you land — without hunting for SIM cards at the airport or dealing with language barriers.
• Seamless movement across borders should feel effortless, not fragmented.

Why Sigma Mobile’s GBA eSIM Delivers:

This eSIM provides unrestricted, truly unlimited data across Mainland China, Hong Kong, and Macau on a single profile. Here’s what makes it exceptional:

• No VPN, No Censorship in Mainland China: Enjoy full, unrestricted access to all your favorite global apps and services exactly as you would at home. Google Workspace, video calls, streaming, banking apps — everything works smoothly without extra software or configuration.
• True Seamless GBA Travel: One eSIM handles everything. Cross from Hong Kong to Shenzhen or Macau to Guangzhou without swapping cards or losing signal. It automatically connects to the best available local networks (CMCC, CMHK, CTM) for reliable 4G/5G performance.
• Powerful and Unlimited: No daily caps or surprise throttling on “unlimited” plans. Use as much data as you need for work, navigation, video calls, or entertainment. Hotspot/tethering is fully supported, so you can share the connection with your laptop or companions.
• Effortless Setup and Instant Delivery: Receive the QR code by email within minutes of purchase. Install in advance (keep it off until arrival to preserve validity), scan, and connect. It pairs perfectly with your existing physical SIM for calls and WhatsApp on your home number via dual-SIM functionality.
• Affordable and Reliable: Competitive pricing starting low, backed by strong local carrier partnerships. Sigma Mobile emphasizes customer support for any setup issues.

Real-World Benefits

For Expats: Maintain productivity during multi-city business days. Join Zoom/Teams calls, access cloud services, and communicate with international teams without interruptions or security concerns from flaky VPNs. The consistent, high-speed connection across the GBA makes daily life and work far smoother.

For Tourists: Focus on enjoying your trip — whether photographing Hong Kong’s skyline, exploring Macau’s heritage, or visiting Shenzhen’s tech hubs — while staying connected for directions, bookings, and sharing moments in real time. No more worrying about data running out or hunting for Wi-Fi.

How to Get Started

1. Visit Sigma Mobile’s China-Hong Kong-Macau eSIM page.
2. Choose your preferred data plan and duration.
3. Complete payment and receive your eSIM QR code instantly via email.
4. Check device compatibility (most recent iPhones, Google Pixels, Samsung Galaxy flagships, and many others support it — dial *#06# to check for an EID).
5. Activate upon arrival and enjoy the freedom.

Note: eKYC (real-name registration) is required for full use in Hong Kong and Macau — a quick online process.

In a region as interconnected yet digitally complex as the Greater Bay Area, Sigma Mobile’s eSIM removes the biggest travel friction points. It delivers powerful, unrestricted, unlimited internet on one simple profile — perfect for both business professionals who need reliability and tourists who want convenience.

Ditch the multiple SIMs and VPN headaches. Grab this eSIM for your next GBA trip and experience connectivity the way it should be: effortless and borderless.

Safe travels and productive journeys!

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