A standard local Chinese SIM is behind the Great Firewall, so Google, Gmail, WhatsApp, Instagram, and Google Maps are blocked unless you also run a VPN. A travel eSIM that routes your data through Hong Kong sees the open internet instead, so those apps just work with no VPN. For that reason most visitors should prefer an eSIM, see our China eSIM guide to compare, or let the eSIM Finder pick one for you.
What This Guide Covers
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China's Mobile Landscape
China has three state-owned mobile network operators: China Mobile, China Unicom, and China Telecom. China Mobile is by far the largest and has the broadest rural coverage. China Unicom is the most foreign-phone-friendly and is the carrier most often recommended for tourists. China Telecom is strong in western China but uses a network band that many phones bought outside China cannot access.
All three run extensive 4G and now 5G networks. In Beijing, Shanghai, Guangzhou, Shenzhen, and other large cities, speeds are excellent and 5G is widespread. The decision for travelers is rarely about coverage, which is good everywhere. It is about two things that are unique to China: real-name passport registration, and the Great Firewall.
The Great Firewall Is the Whole Story
A normal local Chinese SIM routes your traffic through domestic servers, which means it is filtered by the Great Firewall. Google, Gmail, Google Maps, WhatsApp, Instagram, Facebook, X, and YouTube are all blocked. You would need a VPN to reach them. This single fact is why so many travelers skip the local SIM entirely. See the eSIM section below for the workaround.
China Mobile
China Mobile: The Coverage King
The world's largest carrier with the best rural and nationwide reach
China Mobile is the market leader and has the most reliable signal in remote areas, on high-speed trains, and in smaller towns. A typical airport tourist plan runs around 20 GB plus 80 minutes for 150 RMB, or 30 GB plus 200 minutes for 200 RMB, both valid 30 days. If you are heading deep into the countryside, Tibet, or western provinces, China Mobile gives you the most dependable coverage.
Still Behind the Firewall
A standard China Mobile tourist SIM routes domestically, so it is filtered by the Great Firewall. You will not be able to use Google, Gmail, WhatsApp, or Instagram without a VPN. Buy and configure a reputable VPN before you arrive, because VPN provider websites are themselves often blocked once you land.
China Unicom
China Unicom: The Foreigner-Friendly Choice
Works with the widest range of foreign phones, and certain tourist plans route abroad
China Unicom is the carrier most often recommended to visitors because it is compatible with the widest range of foreign-bought phones. It has excellent 5G in every major city. Standard local Unicom plans are still behind the Great Firewall like any other Chinese SIM.
The important exception is Unicom's specific international roaming tourist plans, often sold through travel resellers such as Klook, which route your data through Hong Kong. Because the traffic exits China via Hong Kong, it is not filtered, and Google, WhatsApp, and Maps work without a VPN. These plans cost more, usually in the 250 to 350 RMB range, but they are the one local-SIM route that escapes the firewall. Read the plan description carefully, because a normal in-store Unicom SIM does not do this.
Check the Wording Before You Buy
Only Unicom plans explicitly described as international roaming or Hong Kong routing bypass the firewall. A generic Unicom prepaid SIM bought at a carrier shop is filtered like every other domestic SIM. If firewall bypass matters to you, a travel eSIM is the simpler and more reliable way to get it.
China Telecom
China Telecom: Strong in the West, Tricky for Foreign Phones
Good speeds and western-China reach, but device compatibility is a real catch
China Telecom offers competitive pricing, with a common tourist plan of 30 GB for 30 days starting around 129 RMB, and it is often faster than rivals in western China. The catch is compatibility: China Telecom historically relied on network bands that many phones bought outside China cannot use, so plenty of foreign handsets simply will not connect. For that reason most travelers default to China Unicom or China Mobile instead.
Like the other domestic carriers, a standard China Telecom SIM is filtered by the Great Firewall, so you would still need a VPN for Google and Western messaging apps.
China SIM Card Plans Compared
| Carrier | Typical Data | Validity | Price | Firewall | Best For |
|---|---|---|---|---|---|
| China Mobile | 20 to 30 GB | 30 days | 150 to 200 RMB | Blocked, VPN needed | Rural and remote travel |
| China Unicom | 10 to 20 GB | 30 days | 200 to 300 RMB | HK-routing plans bypass it | Foreign phones, best local pick |
| China Telecom | 30 GB | 30 days | From 129 RMB | Blocked, VPN needed | Western China, compatible phones only |
| Travel eSIM | 1 to 20 GB | Flexible | From about $4 | Bypassed, no VPN | Most travelers |
The pattern is clear: the three local carriers are all filtered by default, and only a specific China Unicom Hong Kong roaming plan or a travel eSIM gets you the open internet without a VPN.
Where to Buy a SIM Card in China
Airport Carrier Booths
China Mobile and China Unicom run booths in the arrival halls at Beijing Capital (PEK) Terminals 2 and 3 and at Shanghai Pudong (PVG) Terminals 1 and 2. Many are open 24 hours, staff in the big airports usually speak some English, and they accept cash and international cards. Bring your passport for registration.
Carrier Shops in the City
Official China Mobile, China Unicom, and China Telecom stores are everywhere in cities. You will get the full range of plans, but English support is hit or miss outside the largest shops, and real-name registration with your passport is mandatory.
Order a Unicom Tourist SIM Before You Fly
Travel resellers such as Klook sell the China Unicom tourist SIM with international roaming, shipped to your home before departure for roughly $30 to $35. This is the one mail-order option that can bypass the firewall, but confirm the listing says Hong Kong or international routing.
Skip the SIM and Install an eSIM
If your phone supports eSIM, the simplest path is to install a travel eSIM before your flight. No passport registration, no store visit, and no firewall. See the next section for why this is the default recommendation for China.
eSIM vs Local SIM Card in China
This is the most important comparison on the page, and in China it is not close for most travelers. The deciding factor is the Great Firewall. A local SIM routes your traffic through Chinese domestic servers, so it is filtered. A travel eSIM connects to a Chinese tower but routes your data session out through a foreign gateway, commonly Hong Kong, so the internet treats you as if you were browsing from outside China. Google, WhatsApp, Instagram, and Maps work straight away, no VPN required.
| Factor | Travel eSIM | Local SIM |
|---|---|---|
| Great Firewall | Bypassed, no VPN needed | Filtered, VPN needed (except Unicom HK-routing plans) |
| Setup time | 3 minutes before your flight | 5 to 15 minutes at a store with passport |
| Passport registration | No | Yes, mandatory |
| Price (short trip) | From about $4 to $14 | 129 to 300 RMB ($18 to $42) |
| Phone calls | Data only (use the included data for apps) | Local number with domestic minutes |
| Best for | Almost everyone visiting China | Long stays needing a Chinese number |
For the overwhelming majority of visitors who just want working data and their normal apps, a travel eSIM is cheaper, faster, and avoids the firewall headache entirely. A local SIM only makes sense if you need a Chinese phone number for a long stay, and even then many travelers run an eSIM for data alongside a local SIM for calls.
China-Specific Tips
Practical Advice for Staying Connected in China
Set up before you land: Whether you choose a VPN or an eSIM, install and configure it before arrival. VPN provider sites and app stores for Google and WhatsApp are often unreachable once you are inside the firewall.
WeChat and Alipay run everywhere: Chinese super-apps are not blocked and are essential for payments, taxis, and translation. Set them up in advance, ideally linked to an international card.
Hong Kong and Macau are outside the firewall: Both regions use the open internet, so Google and WhatsApp work on local networks there with no VPN. A China eSIM that covers them is convenient for combined trips.
5G is widespread in cities: If your phone supports 5G standalone, enable it for noticeably faster speeds in Beijing, Shanghai, Shenzhen, and other large cities.
Keep your passport handy: Any local SIM purchase requires real-name registration, and the shop will photograph or copy your passport photo page.
Frequently Asked Questions
Does a local China SIM bypass the Great Firewall?
No. A standard China Mobile, China Unicom, or China Telecom SIM routes through Chinese domestic servers, so it is filtered by the Great Firewall. Google, Gmail, WhatsApp, Instagram, Facebook, and YouTube are blocked unless you also run a VPN. The only local exception is a specific China Unicom tourist plan that routes via Hong Kong.
Do I need my passport to buy a SIM card in China?
Yes. China requires real-name registration for every SIM card, so you must show your passport and the shop will photograph or copy your photo page. There is no anonymous prepaid option. A travel eSIM, by contrast, needs no passport registration at all.
How does a travel eSIM bypass the Great Firewall?
A travel eSIM connects to a Chinese cell tower but routes your data session out through a foreign gateway, most commonly Hong Kong. Because your traffic exits China before reaching the open internet, it is not filtered, so Google, WhatsApp, and Maps work normally with no VPN required.
Which carrier has the best coverage in China?
China Mobile has the broadest nationwide and rural coverage, making it the safest choice for remote areas, Tibet, and high-speed trains. China Unicom and China Telecom are comparable in big cities, with China Telecom sometimes faster in western China. All three have strong 5G across major cities.
Should I get a local SIM or a travel eSIM for China?
For most travelers a travel eSIM is the better choice because it bypasses the Great Firewall with no VPN, needs no passport registration, and is usually cheaper for short trips. A local SIM mainly makes sense if you need a Chinese phone number for a long stay, and even then many visitors pair a local SIM for calls with an eSIM for data.