The short answer: a Chinese local SIM is activated only after real-name registration with your original passport and a live facial check at the counter. Just as important: buying one does not change the network restrictions. Many products sold abroad under the name "China SIM" are not mainland carrier lines at all, but roaming SIMs from Hong Kong operators, which behave completely differently. Confusing the two is how travellers end up with a local SIM that cannot open the apps they wanted.
If your priority is a connection that keeps working the way it does at home, see the Coral eSIM plan list and pick an allowance that matches your trip.
Two different products are sold as a "China SIM"
The same search term returns two categories that are not interchangeable.
Mainland carrier local SIMs
Lines sold inside China by China Mobile, China Unicom and China Telecom. You get a Chinese phone number and the best compatibility with local services, but registration is mandatory and your traffic exits from the local network, so restrictions on some services hosted outside the country apply as normal.
Roaming SIMs sold abroad
Most products marketed overseas as working in China are lines from Hong Kong or other operators, used in China via roaming. The data session is carried back to the issuing operator and exits from there, so the local restrictions are not applied to it. There is no Chinese number attached and no registration to complete.
So the shelf holds two things with different purposes: a local number, or a connection that behaves like it does at home. Decide which one you actually need before comparing prices.
A local SIM requires real-name registration and a facial check
China's regulations on real-name registration of telephone users require carriers to record the subscriber's genuine identity information when a line is opened. Following a notice from the Ministry of Industry and Information Technology, carriers have also performed facial comparison at physical points of sale since 1 December 2019.
For a foreign visitor the process runs like this:
- Present the original passport. A photocopy or a phone image will not do
- Have your photo taken and matched against the passport. Nobody can register the line on your behalf
- Wait for activation once registration clears, which commonly takes five to twenty minutes depending on the store
Because of this, buying through a proxy or taking over a line someone else registered does not work. Pre-registered Chinese numbers offered through resale channels can be suspended later.
Where to buy a SIM in China
Carrier counters at arrival airports
Major international airports such as Beijing, Shanghai and Guangzhou may have carrier counters in the arrivals area, where registration and activation are handled together and English assistance is usually available. Be aware that not every airport has one and opening hours vary, so this should not be your only plan.
Carrier stores in the city
An official carrier store will always be able to process the registration, and the plan choice is wider. The drawbacks are that you have no connectivity between landing and reaching the store, and that service is often conducted mainly in Chinese.
Do not buy outside official channels
Since registration is a legal requirement, any seller offering to skip it is not operating legitimately. A line registered under someone else's identity can be cut off, and a traveller has no practical way to recover it.
China Mobile, China Unicom or China Telecom
- China Mobile: the largest subscriber base and the broadest coverage. The safer pick if you are travelling beyond the major cities
- China Unicom: urban-focused, with international operations and generally clearer guidance for foreign customers
- China Telecom: solid in urban areas, with strength that varies by region
For a trip around Beijing, Shanghai, Guangzhou or Shenzhen, the practical difference between the three is hard to notice. Which store you can actually reach matters more than which brand you pick.
What a local SIM does and does not give you
- Restrictions still apply. A local SIM exits from the mainland network, so services blocked there stay blocked. It is not a workaround
- You get a Chinese number. That unlocks ride-hailing, restaurant bookings and deliveries that will not proceed without one
- Payment apps are a separate hurdle. Having a number does not complete identity verification or card support for local payment services
- SMS to your home number stops arriving if you physically swap the SIM. Bank and booking codes are the usual casualty; see receiving SMS verification codes abroad
Local SIM, roaming SIM or eSIM
Work backwards from what you need and the choice is straightforward.
A local SIM makes sense when
- You need a Chinese phone number for a long stay, local service sign-ups, deliveries or frequent bookings
- You have time to visit a carrier store and complete registration
- Losing access to services hosted outside the country will not disrupt your trip or your work
A roaming SIM or eSIM makes sense when
- You are on a short trip and want maps and messaging working the moment you land. No store visit required
- You would rather not hand over a passport and be photographed at a counter
- You want to keep your home number active and move only data
- You want the services you already use to keep working
The airport comparison is in buying a SIM at the airport versus an eSIM. China-specific guidance is in how to choose an eSIM that works in China, with iPhone details in can you use an iPhone eSIM in China. Country and duration options are on the plan page.
FAQ
Will a Chinese local SIM let me use Google and other blocked services?
No. Traffic on a local SIM exits from the mainland network, so the same restrictions apply. Connections that are carried back to an operator outside the mainland, such as roaming lines and travel eSIMs, are the ones that behave differently.
Is the "China SIM" sold online the same as a local SIM?
Usually not. Most products sold abroad are Hong Kong or other operators' lines used in China via roaming: no Chinese number, no registration. If you specifically need a Chinese number, you have to sign up at a carrier store in the mainland.
Can I buy one at the airport with just my passport?
The original passport is what you need, but the counter will also photograph you for the facial check. Not every airport has a counter, and hours vary, so do not rely solely on buying after you land.
Do tourists actually need a Chinese phone number?
For short sightseeing trips, generally no. Some ride-hailing and booking services do ask for a local number to register. If you are staying longer and using local services daily, getting a number is worth the effort.
Does a mainland SIM work in Hong Kong and Macau?
They are treated as separate regions, so a mainland line does not necessarily work there. For an itinerary that crosses between them, choose a connection that covers all of the regions on one line.
In China the decision starts with whether you need a local number
Choosing a SIM for China is not a price comparison. It splits first on whether you need a Chinese phone number. If you do, accept the registration process, bring your passport and go to a carrier store. If you do not, there is no reason to queue at a counter at all.
And keep the other half in view: a local SIM is not a fix for network restrictions. If you want the services you rely on to keep working while you travel, you need a connection that exits outside the mainland. Durations and allowances are listed on the Coral eSIM plan page.