One eSIM for Hong Kong and Macao: I priced all 4 options

Hong Kong and Macao are about an hour apart by ferry. A lot of people planning both assume that means two eSIMs, or one SIM and one roaming bill. It usually doesn't.

We sell four overlapping eSIMs in this corner of the map — plus a mainland-China-only one that turns out to be relevant here. I priced all of them against each other today, and the results are not what I expected when I started:

• The two-city Hong Kong & Macao plan costs exactly the same as the Hong Kong-only plan. Macao is free.
• Adding mainland China to the same card costs 40% to 61% more on daily plans — but only about 10% more on 30-day plans. Same product, two completely different pricing logics.
• Whether you have to complete real-name registration depends on whether the card covers Hong Kong, not how long you actually spend there.
• The daily plan ladder stops at 7 days. If your trip is 8 to 29 days, you're in a gap that almost nobody warns you about.

Here is how each of those works out, and which card your itinerary should use.

Start here: which one is yours

If your trip is…	Buy this	Why
Macao only	Macao-only card	Same price as the others, and it's the one card here that skips real-name registration entirely.
Hong Kong only	Hong Kong & Macao card	Identical price to the Hong Kong-only card. Take the one with the extra country; it costs you nothing.
Hong Kong + Macao	Hong Kong & Macao card	Cheaper than two singles in most itineraries, and you never swap SIMs at the border.
Any of the above + mainland China	China, Hong Kong & Macao card	It's the only one that crosses the boundary with you. Budget for the jump — it's real.
Long stay in mainland China	China-only card	Up to 365 days. HK$510 for 365 days / 100GB works out to about HK$1.40 a day. Nothing else here is close.

1. The two-city card and the single-country cards cost exactly the same

This is the part that surprises people, so here is every price point rather than a summary. Three cards, twelve daily configurations each:

Days	Tier	Hong Kong only	Macao only	Hong Kong & Macao
1	2GB/day	HK$10	HK$10	HK$10
1	5GB/day	HK$12	HK$12	HK$12
1	Unlimited	HK$15	HK$15	HK$15
3	2GB/day	HK$23	HK$23	HK$23
3	5GB/day	HK$31	HK$31	HK$31
3	Unlimited	HK$38	HK$38	HK$38
5	2GB/day	HK$36	HK$36	HK$36
5	5GB/day	HK$50	HK$50	HK$50
5	Unlimited	HK$62	HK$62	HK$62
7	2GB/day	HK$49	HK$49	HK$49
7	5GB/day	HK$69	HK$69	HK$69
7	Unlimited	HK$85	HK$85	HK$85

Twelve price points, three different cards, zero differences. There is no situation where buying the Hong Kong-only card saves you money over the two-city one.

Two practical consequences. First, if you're going to Hong Kong, order the two-city card even if you have no plans for Macao — a ferry trip you take on a whim is already covered. Second, a quick note on what "Unlimited" means here, because the word does a lot of work: the daily high-speed allowance is followed by unlimited data at 256kbps. That's fine for messaging, maps and email. It is not fine for video calls or uploading anything.

2. But whether one card beats two depends on your exact day split

"The two-city card covers both places for the price of one" is the headline, and it's true. It is also not always the cheapest option, and I'd rather say so than have you find out at checkout.

The catch is that there is no 2-day, 4-day or 6-day plan. The daily ladder is 1, 3, 5, 7. So a single two-city card has to round your whole trip up to one of those numbers, while two separate cards round each leg up separately. Sometimes that works out in favour of two cards:

HK days	Macao days	One two-city card	Two single cards	Cheaper
1	1	3-day · HK$23	1-day + 1-day · HK$20	Two cards, by HK$3
3	3	7-day · HK$49	3-day + 3-day · HK$46	Two cards, by HK$3
2	2	5-day · HK$36	3-day + 3-day · HK$46	One card, by HK$10
3	2	5-day · HK$36	3-day + 3-day · HK$46	One card, by HK$10
4	3	7-day · HK$49	5-day + 3-day · HK$59	One card, by HK$10
5	2	7-day · HK$49	5-day + 3-day · HK$59	One card, by HK$10
6	1	7-day · HK$49	7-day + 1-day · HK$59	One card, by HK$10

I ran all 21 combinations where you spend at least one day in each place and no more than ten days total. One card wins 15 of them, saving HK$10 every time. Two cards win 6, saving HK$3 every time.

The rule behind those 6 is tidy: two separate cards only win when both legs land exactly on 1, 3, 5 or 7 days. Any mixed number — 2 nights here, 4 nights there — and the rounding-up waste piles up on two cards instead of one, and the two-city card wins.

Which means my actual recommendation is: buy the one card. Even in the six cases where two cards are HK$3 cheaper, you'd be installing two eSIM profiles and manually switching data lines at the border — and the failure mode for that is standing in the Macao ferry terminal with no data because you forgot to switch. Three dollars is not a good price for that.

3. Adding mainland China changes the pricing completely

So far so simple. Now add ", Hong Kong & Macao" → ", Hong Kong & Macao & China" and two odd things happen at once.

The first is that the premium depends entirely on which type of plan you buy:

Plan type	Two-city card	Three-region card	Premium
1 day · 2GB/day	HK$10	HK$14	+40.0%
1 day · 5GB/day	HK$12	HK$17	+41.7%
3 days · 2GB/day	HK$23	HK$36	+56.5%
3 days · 5GB/day	HK$31	HK$45	+45.2%
5 days · 2GB/day	HK$36	HK$58	+61.1%
7 days · 2GB/day	HK$49	HK$79	+61.2%
7 days · 5GB/day	HK$69	HK$101	+46.4%
Daily plans: +40.0% to +61.2%
30 days · 5GB total	HK$36	HK$40	+11.1%
30 days · 10GB total	HK$69	HK$75	+8.7%
30 days · 20GB total	HK$121	HK$133	+9.9%
30 days · 50GB total	HK$264	HK$290	+9.8%
30-day plans: +5.9% to +11.1%

I don't have a tidy explanation for why the two plan families are priced so differently, and I'm not going to invent one. What I can tell you is the practical consequence: if your trip includes mainland China and lasts more than a week, buy a 30-day total-data plan rather than a daily one. You'll pay roughly a tenth extra over the two-city card instead of half again as much.

The second odd thing is smaller but catches people who don't check: the three-region card has no Unlimited tier at all. Daily options go up to 5GB/day and stop. If unlimited-with-throttling is how you like to travel, the mainland-inclusive card can't give you that at any price.

One more thing worth knowing before you cross the boundary. The three-region card lists its networks as CMCC in mainland China, CMHK in Hong Kong and CTM in Macao. Because the mainland leg attaches to a Chinese mainland operator, your traffic there is subject to mainland network restrictions — the same ones we wrote about in China eSIM + VPN: what actually works. Google services, WhatsApp, Instagram and most Western apps won't load in mainland China on this card. Cross back into Hong Kong or Macao and they work again. Same physical SIM, different internet depending on which side of the boundary you're standing on.

4. Real-name registration follows the card, not your feet

Hong Kong has required real-name registration for SIM cards since February 2023, tourist prepaid cards included. Every plan we sell that touches the Hong Kong network asks you to complete it once, at realname-reg.com/en, before it will work in Hong Kong.

What trips people up is that this is a property of the plan, not a property of where you're going:

Card	Real-name registration
Macao only	Not required
Mainland China only	Not required
Hong Kong only	Required
Hong Kong & Macao	Required
China, Hong Kong & Macao	Required

So: if your whole trip is Macao and you'd rather not hand over ID documents, buying the Macao-only card means you never touch that step. But if you buy the two-city card "just in case" — same price, remember — you've taken on a registration step you didn't need to do.

Either way, if your card covers Hong Kong, do the registration before you fly. It's the single most common cause of "landed in Hong Kong, no data" support tickets, and it's much less annoying to sort out on hotel wifi than in an arrivals hall. Our walkthrough is in the FAQ.

5. The gap between 7 days and 30 days

Every daily plan here stops at 7 days. There is nothing at 8, 10, 14 or 21 days. If your trip is longer than a week you have two options: stack short daily plans back to back, or jump to a 30-day total-data plan. They behave very differently, because a daily plan gives you 2GB a day whether you use it or not, while a total plan gives you one bucket and cuts the connection when it empties.

Trip	Cheapest daily stack	Its total capacity	30-day plan that beats it	Choose the 30-day plan if you'll use
8 days	HK$59	16GB	5GB · HK$36	under ~5GB total
10 days	HK$72	20GB	10GB · HK$69	under 10GB total
14 days	HK$98	28GB	15GB · HK$95	under 15GB total
18 days	HK$131	36GB	20GB · HK$121	under 20GB total
21 days	HK$147	42GB	20GB · HK$121	under 20GB total
28 days	HK$196	56GB	30GB · HK$166	under 30GB total

There's a rough rule hiding in that table: the tipping point sits around 1.5GB per day. If you average more than that — streaming, hotspotting a laptop, lots of navigation — stack daily plans. If you average less, which most city travellers do once they're on hotel wifi every evening, take the 30-day plan and pocket the difference.

Two things to weigh alongside the money. A total-data plan gives you a 30-day window, so you're never mid-trip having to activate the next card. Against that, when it runs out it stops — our total plans cut off rather than throttle, so empty means genuinely no data until you buy another. Our daily vs fixed-data comparison goes into that difference properly.

6. Hong Kong and Macao are the easy case for the clock

All our plans count validity in calendar days in UTC+08:00, not 24-hour periods from activation. For Hong Kong and Macao that's the good news nobody notices, because both places are UTC+8. The day rolls over at local midnight, exactly when you'd expect it to.

That's not how it works everywhere else on our site:

Destination	Local zone	Your daily allowance resets at
Hong Kong / Macao	UTC+8	00:00 local — same as your watch
Singapore / Malaysia	UTC+8	00:00 local
Thailand / Vietnam	UTC+7	23:00 local — the evening before
Japan / South Korea	UTC+9	01:00 local — you lose nothing, it resets late
UAE	UTC+4	20:00 local
Saudi Arabia	UTC+3	19:00 local

If you're hopping between several of these on one trip, the reset time is worth knowing before you buy more data than you need. We've written it up in detail for Japan, Southeast Asia and the Middle East.

7. Three cases where you shouldn't buy the obvious thing

• Don't buy the mainland-inclusive card "just in case." It's 40–61% more expensive on daily plans, needs registration regardless, and has no unlimited tier. If you're not crossing into Shenzhen, you're paying protection money against a trip you're not taking.
• Don't buy two single-country cards to save HK$3. It only works if both legs land exactly on 1/3/5/7 days, and it costs you a manual SIM swap at the border.
• Don't buy a week of daily plans for a two-week stay. If you're under 1.5GB a day, the 30-day plan is cheaper and you activate it once.

And one that isn't about us: if you're only in Macao and your hotel and the casino shuttles cover you with wifi, you may want nothing at all. A Macao-only plan starts at HK$10. Sometimes the honest answer is that you don't need it.

What to actually do

1. Count your nights in each place. If both numbers are exactly 1, 3, 5 or 7, two cards are HK$3 cheaper — take the one card anyway.
2. Decide whether you cross into mainland China. If yes, buy a 30-day total plan, not a daily one.
3. If your card covers Hong Kong, complete real-name registration before boarding.
4. Install and activate on wifi at home. Every one of these plans is delivered by email within 5–10 minutes, and they activate on contact with a mobile network — so don't turn off airplane mode until you land, or you'll start the clock early.