Stay connected in Hong Kong with world-class eSIM coverage on CMHK, SmarTone, and 3HK. Kowloon, Hong Kong Island, Lantau, and the New Territories fully covered. 5G throughout — instant activation.
5G ready Hotspot included Keep your home line 24/7 humans
Change your mind within 7 days and we refund in full — as long as the eSIM is unused or under 100 MB, so you can install it and check it connects first. A plan that genuinely fails is refunded any time. Details.
Pick data amount and validity. Pay with card, Apple Pay, or Google Pay.
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Scan the QR code
We email a QR code instantly. Scan it in Settings — installed in under 60 seconds. No app needed.
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Land online in Hong Kong
Your phone connects to local networks automatically when you arrive. No SIM swap, no kiosk. Hotspot included.
Network
Coverage & connectivity.
Networks we run on in Hong Kong
csl5G
Your device connects to the strongest available network automatically — no manual setup.
Hong Kong (territory-wide)
Hong Kong has one of the world's densest 5G networks — effectively blanket 5G across Hong Kong Island, Kowloon, and the New Territories. The MTR (Mass Transit Railway) has full 4G/5G in all underground stations and tunnels, including cross-harbour tunnel segments. Hong Kong Island (Central, Causeway Bay, Wan Chai, Aberdeen), Kowloon (Mong Kok, Tsim Sha Tsui, Sham Shui Po), Lantau (Tung Chung, Disneyland), and the Outlying Islands ferry terminals all have strong 5G. Hiking trails on Dragon's Back, Lion Rock, and Lantau Peak have 4G on accessible sections; very high ridgelines may have variable signal. Cheung Chau, Lamma, and Lantau island-wide are covered at the main settlements.
Plan size
How much data do you need?
Pick your travel style and trip length — we'll suggest the right Hong Kong plan, no guessing.
Yes — full 4G/5G throughout all MTR stations and tunnels, including the cross-harbour tunnel. Coverage is flawless on every line.
Is Lantau Island and Disney covered?
Yes. Lantau has island-wide coverage. Hong Kong Disneyland, Tung Chung, and the Ngong Ping 360 cable car area all have strong 4G/5G.
Will this work on the Star Ferry?
Yes. Victoria Harbour is fully covered — both Star Ferry crossings (Tsim Sha Tsui to Central/Wan Chai) have full 5G throughout the journey.
How does pricing compare to Airalo Hong Kong?
Flysimio is priced below Airalo for equivalent Hong Kong plans on the same CMHK or SmarTone network.
Does this work in Macau?
Your Hong Kong eSIM covers Hong Kong only. For Macau, purchase a separate Macau eSIM or a China+Macau+HK multi-region plan.
What is an eSIM?
An eSIM (embedded SIM) is a digital SIM built into your phone. Instead of a physical card, you scan a QR code and your plan installs instantly — no SIM tray needed.
Is my phone eSIM-compatible?
iPhone XS (2018) and newer, most Android flagships from 2020+, and all Samsung Galaxy S21+ devices support eSIM. Check our compatibility page for the full device list.
How do I install the eSIM?
After purchase, we email a QR code. On iPhone: Settings → Cellular → Add eSIM → Scan QR Code. On Android: Settings → Network & Internet → SIMs → Add eSIM. The whole process takes under 60 seconds.
Can I keep my regular SIM while using this eSIM?
Yes. Most phones support dual SIM (physical + eSIM). Keep your home number for calls and SMS — use Flysimio for data abroad. You control which SIM handles what in your phone Settings.
Does the eSIM include a hotspot (tethering)?
Yes, all Flysimio plans include mobile hotspot at no extra charge. Share your data connection with laptops, tablets, or other devices freely.
What happens when my data runs out?
You can top up data from your account dashboard at any time. Top-ups are applied instantly — no need to buy a new eSIM or wait.
Can I get a refund?
Yes. We offer a full refund within 7 days of purchase. Contact contact@flysimio.com with your order number.
How long is the eSIM valid for?
You have 6 months from your purchase date to activate the eSIM. Once activated, the plan validity period (e.g., 7 days, 30 days) begins counting down.
Will the eSIM work at the airport when I land?
Yes — as long as you installed the eSIM before your flight, it activates automatically when your phone connects to a local network on landing. No Wi-Fi required for activation.
What if the QR code doesn't scan?
If the QR code won't scan, you can enter the activation code manually — we include both in the email. You can also contact our 24/7 support team and we'll resend or manually provision your eSIM.
eSIM in Hong Kong
The complete guide.
Best eSIM for travel to Hong Kong
The best Hong Kong eSIM taps into one of the world's densest 5G networks, with clear pricing and instant setup. Flysimio runs on CMHK, SmarTone, and 3HK — offering territory-wide 5G across Hong Kong Island, Kowloon, and the New Territories, including the MTR tunnels. Plans are prepaid with no contract and no roaming surprises, so the price you see is what you pay. Your QR code arrives by email seconds after checkout and installs in under a minute, every plan includes free mobile hotspot, and there's a 7-day money-back guarantee. Even for a layover it pays for itself — land at Hong Kong International already connected. Comparing providers? Our best eSIM for Hong Kong guide puts CSL- and SmarTone-routed plans side by side.
How to set up a Hong Kong eSIM (step by step)
Getting online in Hong Kong takes about two minutes. First, confirm your phone supports eSIM — iPhone XS (2018) and newer and most Android flagships from 2020 qualify. Choose your Hong Kong plan on Flysimio and pay with card, Apple Pay, or Google Pay; your QR code arrives by email within seconds. On Wi-Fi before you fly, open Settings → Cellular → Add eSIM (iPhone) or Network & Internet → SIMs → Add eSIM (Android) and scan it — a manual code is included too. Keep your home line as default until arrival. When you land at Hong Kong International, your Flysimio line connects automatically — perfect even for a few-hour transit.
How much data do you need in Hong Kong?
Hong Kong is compact, so most visitors need less than they expect. For maps, messaging, and email, roughly 300 MB a day is plenty, so a 1–3 GB plan easily covers a short stay or a long layover. For a week of social media, photos, and music, around 5 GB is comfortable; a two-week regional base works well on 10 GB. Heavy streamers or anyone tethering a laptop should plan for 1.5 GB or more per day or choose an unlimited daily plan. Use the calculator above to size it, and top up mid-trip if you run low.
Using a Hong Kong eSIM on iPhone and Android
Flysimio runs as a second line beside your usual SIM, so you keep your home number for calls and texts while your Hong Kong data flows over the eSIM — standard dual-SIM behaviour on iPhone XS and later and most Android phones from 2018. After installing, set the Flysimio eSIM as your cellular-data line and turn on Data Roaming for that line only; it simply lets the eSIM connect to Hong Kong networks, with no roaming fees. Keep your home SIM on for messages and calls, or switch it off to avoid your own carrier's charges. If you're unsure about your model, the compatibility page confirms it before you buy.
Hotspot, calls, and texts on a Hong Kong data eSIM
Every Flysimio Hong Kong plan includes mobile hotspot at no extra cost and without throttling, so you can tether a laptop or tablet or share with a travel companion and use your full allowance freely — handy for working between meetings in Central. As a data-only eSIM it has no Hong Kong phone number, but that rarely matters: WhatsApp, FaceTime, Messenger, and Google Meet handle calls and messages over data, and your home number stays reachable on your primary SIM. You stay connected territory-wide without the per-minute charges of traditional roaming.
Layovers vs. longer Hong Kong stays
For a long airport layover or a two-day stopover, a small 1–3 GB plan on a 7-day validity is the cheapest way to stay online — and beats a day of roaming. For a week exploring the city or a regional base, a 5–10 GB plan or an unlimited daily option gives you room to navigate, stream, and share freely. Because Flysimio gives you six months to activate, you can buy before you leave and the validity only starts when your eSIM first connects in Hong Kong. No contract, nothing to cancel — the plan stops when it's done, and you can top up or rebuy for your next trip.
