The first time I landed in China with only my home SIM and a roaming plan, I spent an hour at the airport trying to load a map and watched the connection drop every time I needed it most. That was the trip that taught me to sort connectivity before the plane lands, not after. This guide walks through how to get a Chinese SIM or eSIM, what the real-name registration rules mean for you, and why your choice affects more than just your data speed.
Staying online in China is easy once it works and annoying while you figure it out. The country has fast, cheap mobile networks, but two wrinkles catch first-timers: almost every SIM must be registered to a passport, and many foreign apps and websites are blocked unless you use a tool. Get the SIM right and the rest of your trip runs smoother.
Do you actually need a local SIM?
You might not. If your home plan includes cheap international data, or if your phone supports eSIM and you buy a travel data plan before departure, you can skip the counter entirely. I have done both. For a two-week trip with heavy map and translation use, a local SIM usually costs less than five dollars of data and gives you a Chinese number, which matters for things like hotel registration and some app verifications.
The trade-off is time. Buying a physical SIM at the airport or a carrier shop eats thirty minutes to an hour once you factor in the queue and the paperwork. An eSIM you buy online is instant, but it ties you to a foreign provider’s pricing and sometimes to slower routing. My rule: if I am staying more than a week, I get a local SIM; if I am passing through for three days, I use an eSIM or roaming and move on.
Buying a physical SIM in China
Three carriers run the country: China Mobile (中国移动), China Unicom (中国联通), and China Telecom (中国电信). All three sell tourist packages at airport counters and city stores. At Beijing, Shanghai, and Guangzhou airports you will find branded booths past arrivals, sometimes open late. City stores are everywhere, though the staff may speak little English, so having your passport and the phrase “tourist data plan” written in Chinese helps.
You need your passport. Registration is mandatory and the clerk will scan it and take a photo. This is not optional and it is not a scam; it is the real-name system that applies to every local SIM. Plans for visitors typically run from a few gigabytes to unlimited data over seven, fifteen, or thirty days, priced roughly between 100 and 300 RMB. China Mobile has the widest coverage in rural and western areas; Unicom and Telecom often have better city data speeds and work more reliably with some foreign phones.
One practical note: not every phone supports every carrier’s bands. Most modern phones are fine, but if you bought your handset locked to a single carrier back home, it will not accept a Chinese SIM at all. Check that your phone is unlocked before you leave.
Airport versus city purchase
Airport counters are convenient and used to tourists, but they sometimes carry only one carrier and the staff may push the priciest package. A city store gives you choice and usually lower prices, at the cost of a language barrier and a longer trip. If you land late, the airport booth is the safe play; if you land early with a free morning, a city Unicom or Telecom shop near your hotel is often cheaper.
eSIM options for China
eSIM is the cleanest route if your phone supports it. You buy a data plan from a travel provider before you fly, scan a QR code, and you are online the moment you land. Providers like Airalo, Holafly, and Nomad sell China plans, and a few route through Hong Kong or Singapore to sidestep some of the local blocking. The upside is zero paperwork and no passport scan with the carrier. The downside is price per gigabyte, which runs higher than a local SIM, and customer support that is a chat window rather than a counter you can walk up to.
Some travelers also report that certain eSIM providers give better access to blocked services than a local SIM does, since the traffic enters through a different gateway. Your mileage varies, and I would not count on it as a substitute for a proper tool if you need Western apps daily. The honest take: eSIM is about convenience, not about beating the firewall.
Registration, real-name rules, and your passport
I want to be blunt about this because it confuses people. Every SIM sold in mainland China must be registered to a real identity. As a foreign visitor that means your passport, in person, with a scan. You cannot buy an anonymous prepaid SIM the way you might in some countries. The registration is tied to your entry record, and if you overstay or your visa lapses, the number can be suspended.
This also means the SIM is yours and yours alone. Do not accept a “friend’s spare number” offer at the airport; those are sometimes tied to someone else’s ID and can stop working or, worse, get you questioned. Buy your own, show your passport, and keep the paper or app receipt. It is the single most important step and the one most often skipped by people who then lose service mid-trip.
Data speeds and the reality of the firewall
On a good 4G or 5G connection in a city, speeds are excellent, often faster than what I get at home. Video calls, maps, and translation all work. What does not work by default is a long list of foreign sites and apps: Google services, many social platforms, and some news sites are blocked. This is where travelers get stuck, because the app you use to message family may simply not load.
A local SIM does not bypass this. You will need a separate tool if access to those services matters to you, and the rules around that shift, so read our guide to internet and apps in China“>internet guide before relying on any one solution. Plan for the block rather than against it: download offline maps, save translation packs, and tell people at home which app you will actually be reachable on.
Topping up and managing the plan
Local SIM packages for visitors are usually fixed-length, so topping up is less of a concern than on a normal plan. If you do need to add data, the carrier apps and mini-programs work, and Alipay and WeChat Pay“>Alipay can handle recharges once you have the account linked. eSIM top-ups happen in the provider’s app and are straightforward. Keep a screenshot of your plan end date; carriers will not remind you, and a lapsed plan on a travel day is a small disaster.
Which option fits which traveler
Solo backpackers on a month-long route should get a local SIM for the price and the local number. Business visitors who need Western apps and land for two days should use an eSIM and a tool. Families sharing a hotspot can buy one local SIM with a big plan and tether, which is what I do with my kids so I only register one passport. The answer is not the same for everyone, and the table below sets out the rough comparison.
| Option | Cost (rough) | Passport needed | Best for |
|---|---|---|---|
| Local SIM (airport) | 100-300 RMB / plan | Yes, in person | Stays over 1 week |
| Local SIM (city store) | Lower than airport | Yes, in person | Cheapest, time to spare |
| Travel eSIM | Higher per GB | No | Short trips, unlocked phones |
| Home roaming | Varies, can be high | No | Very short visits |
Quick facts
- Three carriers: China Mobile, China Unicom, China Telecom.
- Passport registration is mandatory for any local SIM.
- eSIM works without paperwork but costs more per gigabyte.
- Phones must be unlocked to accept a physical SIM.
- Many foreign apps and sites are blocked regardless of SIM.
- Airport booths are easiest; city stores are cheaper.
- Keep your plan end date handy to avoid a lapsed connection.
Frequently asked questions
Can I buy a SIM before I arrive?
Not a physical one tied to your passport, no. You can buy an eSIM data plan online and activate it on landing, which is the closest thing to pre-arrival connectivity. The local physical SIM has to wait until you clear immigration with your passport in hand.
Will my phone work in China?
If it is unlocked and supports the common LTE bands, yes. Most phones sold in Europe, North America, and Asia work on at least one of the three carriers. Locked phones from a single home carrier will not accept a Chinese SIM, so confirm unlock status before you fly.
Do I need a local number, or just data?
Data covers maps, translation, and messaging. A local number helps with hotel check-in, some app verifications, and calls to your hotel or tour operator. If you are relying on those, the local SIM beats a data-only eSIM.
Is an eSIM faster or slower than a local SIM?
City speeds are similar. Some eSIM plans route through nearby regions and can feel slower on speed tests, but for maps and messaging the difference is minor. The bigger gap is price and the lack of a real local number.
What about the firewall and my usual apps?
A Chinese SIM does not open blocked services. You need a separate tool, and the situation changes, so check our internet guide“>internet guide and plan around the block. Download offline maps and translation packs before you depend on them.
Can I use my SIM as a hotspot for my laptop?
Yes, tethering works on local plans and most eSIM plans. I run a laptop and two phones off one local SIM on longer trips. Just watch your data if the plan is capped rather than unlimited.
How does this fit a China trip budget?
Connectivity is cheap in the scheme of a trip. Our China travel budget guide“>budget breakdown puts a SIM at a few dollars, against hotels and trains that dwarf it. Spend the effort on the right plan, not on saving the last yuan.
Want a trip where the small logistics, like staying online, are sorted before you board? Tell us your route and phone type on the contact page, and we will fold connectivity, the apps you need“>the right apps, and a portable wifi backup“>wifi backup into a plan that fits your dates.
Written by the ChinaTravelFood editorial team.
