3HK eSIM Hong Kong 
How fast does the eSIM activate after I switch off airplane mode?
Activation typically takes 10-30 seconds after airplane mode is switched off, depending on local network availability. In some cases it's nearly instant; in remote areas it may take a minute or two. If it doesn't connect within 5 minutes, restart your phone or check that data roaming is enabled.
Can I make phone calls or send SMS?
It depends on the plan you choose. Most eSIMno plans are data-only: on those you cannot place regular calls or send SMS from the eSIM line, but messaging and calling apps work normally over the data connection - WhatsApp, iMessage, FaceTime, Telegram, Signal and Google Meet. We also offer voice plans in selected destinations, and on those calling and SMS work from the eSIM line itself, which comes with its own French phone number and unlimited calling across Europe. Every plan card shows which type it is, so check the plan type before you buy. If you are looking at a voice plan, please also read who you can call and text, and what happens to the phone number - both are explained in their own questions below.
What should I do if I see a 'No network' message after activating my eSIM?
If you see a 'No network' message after activation, try these steps in order: (1) Toggle airplane mode on for 10 seconds, then off. (2) Confirm data roaming is enabled for the eSIM line. (3) Manually select a network in cellular settings. (4) Restart your phone. If the issue continues, contact eSIMno support via WhatsApp or email.
What customer support is available if I have issues?
eSIMno offers support via WhatsApp and email. Our team helps with installation, troubleshooting, billing questions and refund requests during business hours, and our automated assistant answers common questions 24/7. Most issues are resolved within minutes during business hours.
Can I share data from my eSIM with someone else's phone?
Yes, through Personal Hotspot. Activate hotspot on your phone, share the password, and the other device connects to your data. Data used by connected devices counts toward your eSIM plan, so monitor usage to avoid running out faster than expected.
When should I set up my eSIM?
A Wi-Fi connection is required to install your eSIM, so we recommend setting it up before you leave home. Activation can happen later, either right before departure or after you land at your destination - but the initial QR scan needs Wi-Fi.
Can I use the eSIM to make video calls?
Yes - apps like FaceTime, WhatsApp, Zoom, Google Meet, and Microsoft Teams all work over your eSIM data. Video calls use about 200-400 MB per hour depending on quality, so factor that into your plan choice if you make long calls regularly.
Who can I call and text on a voice plan?
Outgoing calls and SMS are unlimited across Europe - that is the calling area, and it is not the same as where the plan gives you data. Incoming calls and SMS go further: they reach you from anywhere in the world, they are free, and they do not use up your allowance. So if someone back home calls or texts your eSIM number, it arrives no matter where they are calling from. If you mainly need to be reachable rather than to make calls, that matters more than the outgoing area.
How can I verify if my eSIM is activated?
There are two clear indicators: (1) your phone's status bar shows the local carrier name once you arrive at your destination, and (2) the data icon (4G, LTE, or 5G) appears next to the eSIMno line in your cellular settings. If neither shows up, turn airplane mode on and then off again, or restart your phone.
Do I need to remove my eSIM after my trip?
You don't have to remove it. When your plan ends, the eSIM stops providing data and moves to Archived in Profile > My eSIMs. If you keep it installed on your phone, you can top it up there and use it again - no new QR code needed (top-ups aren't available for unlimited and voice plans). If you need the space, you can delete the old profile in your phone's cellular settings; after that, you'll need a new eSIM for your next trip.
Can I keep my WhatsApp number while using an eSIM?
Yes. Your WhatsApp number stays linked to your home SIM, so all your chats, contacts, and groups remain unchanged. WhatsApp uses data (not the SIM line directly) for messages and calls, so it works seamlessly over your eSIMno data.
How can I purchase the Hong Kong eSIM?
You can purchase your eSIM directly from the eSIMno website - select a Hong Kong plan and complete the payment. Within minutes you'll receive an order confirmation email that contains everything you need to install: a QR code, a one-tap install link, the SM-DP+ address and activation code, plus an "Install eSIM" button. You can install straight from that email, or sign in anytime and go to Profile > My eSIMs > Install to get the same options.