China’s Great Firewall

You’ve probably heard of the Great Wall of China, but did you know China’s Great Firewall? It’s a system that blocks many foreign websites and apps inside the country (wiki).

If you’re planning a trip to China, this is something you must understand, otherwise you may find yourself unable to access Gmail, WhatsApp, YouTube, or even Google Maps during your trip. Don’t worry, in this guide, we explain what the China’s Great Firewall is, why it exists, and most importantly, how to stay connected as a tourist.

What Is China’s Great Firewall?

The China’s Great Firewall is China’s internet censorship and filtering system. It controls which websites and content can be accessed within the country.

Here are examples of major services affected:

 Thus, if you rely on Google services, social media, or ChatGPT, you’ll need a workaround.

Why Does China Block These Websites?

Since the late 1990s, China has built an advanced system of cybersecurity and information management, designed to:

Regulate information flow in and out of the country
Protect local technology companies and online services
Maintain national security and online safety

China’s Great Firewall is a major component of this system. Regardless of how travelers feel about the policy, you’ll need to adapt while visiting.

Will My Mobile Service Work in China?

Yes and no. Your phone will connect to Chinese mobile networks if you enable roaming:
✅ You can call and receive texts
❌ You still cannot access blocked websites or apps

Data roaming is also often very expensive, making it unreliable as a primary option.

How to Access Blocked Apps and Websites in China

To stay connected and bypass the China’s Great Firewall, tourists typically use two tools:

Option 1: eSIM (for internet access)

An eSIM gives you mobile data everywhere in China — instantly delivered and installed via QR code.
Some eSIM providers also allow access to blocked sites without a VPN.

✔ No need to change SIM cards
✔ Affordable data packages
✔ Easy to activate before you fly

Compare the Best eSIMs for China Travel → here

Tip: Install and activate your eSIM before arrival so you’re online upon landing.

Option 2: VPN (to unblock restricted apps)

A VPN (Virtual Private Network):

✔ Encrypts your internet traffic
✔ Routes through a server outside China
✔ Gives full access to apps like Gmail, WhatsApp, YouTube, ChatGPT, etc.

Compare VPNs That Work in China → here

TIP: Download and install your VPN before flying to China. VPN apps are blocked in China’s app stores.

Should You Use eSIM, VPN, or Both?

Depending on your needs, here’s what we generally recommend:

Will I Get Into Trouble by using eSIM or VPN?

A lot of tourists wonder if eSIM/VPN are allowed in China:

Is it legal to use an eSIM in China?
✅ Yes — totally legal.

Is it legal to use a VPN in China?
✅ Yes — legal for travelers as long as the provider complies with Chinese regulations.

Can I keep using my home phone number?
✅ Yes — an eSIM allows your primary SIM to stay active for calls/texts.

Will hotel Wi-Fi allow blocked sites?
❌ No — the Great Firewall applies everywhere, including Wi-Fi.

Final Takeaway

China is an incredible destination, from spectacular landscapes and rich cultural history to warm hospitality and cutting-edge technology. And with the right preparation, the China’s Great Firewall doesn’t have to get in the way of your adventure.

Whether you install an eSIM for seamless mobile data (Compare Best China eSIM Plans here) or use a trusted VPN (See VPNs That Work in China here) to access your favorite apps, staying connected is easier than you might think. Plan ahead, stay online, and enjoy every moment of your journey through one of the most fascinating countries in the world!