eSIM & Internet for Hangzhou Travel

Stay connected and bypass the Great Firewall — Airalo, Nomad, and Saily compared for China travel. Plus: local SIM cards and pocket WiFi options.

⚠ Critical: You Need a Chinese Phone Number

A travel eSIM keeps you connected and bypasses the Great Firewall — but it does not give you a Chinese phone number. Without a local number, you cannot register for most Chinese apps: Didi, Meituan, Dianping, 12306 (which only accepts +86 numbers), and many others have no email sign-up option — phone number is mandatory. You also cannot receive Alipay or WeChat verification codes reliably on a foreign number. Our recommendation: get a travel eSIM for internet access AND buy a cheap local SIM card at the airport for your Chinese phone number. See the Physical SIM Cards section below.

🚀 The Smartest Internet Strategy for China

A travel eSIM (from Airalo, Nomad, Saily, Holafly, etc.) completely bypasses the Great Firewall — regardless of which plan you choose. This is because travel eSIMs operate as international roaming connections: your data is routed through the eSIM provider's international network, not through the local Chinese internet. You can use Google, Instagram, WhatsApp, and everything else normally. A physical Chinese SIM bought locally does NOT have this advantage — its data goes through the GFW.

eSIM Comparison Table

Here is how the major eSIM providers compare for China travel. All travel eSIMs bypass the Great Firewall because they operate as international roaming connections — the key differences are price, data allowance, and network speed.

ProviderPlanDataDurationPriceGFW BypassBest For
AiraloChina (China Unicom)1-20 GB7-30 days$4-40Budget, reliable
NomadChina1-20 GB7-30 days$4-25Best value
SailyChina1-20 GB7-30 days$4.49-46Cheapest entry
HolaflyChinaUnlimited5-90 days$19-64+Unlimited data

How eSIMs Bypass the Great Firewall

The most important thing to understand about travel eSIMs for China: all travel eSIMs bypass the Great Firewall, including plans labeled "China" that connect to Chinese carriers like China Unicom or China Mobile.

Here is why: travel eSIMs operate as international roaming connections. When your phone connects to a Chinese tower via a travel eSIM, the data is tunneled back through the eSIM provider's international network (in Singapore, Hong Kong, the US, etc.) before reaching the internet. The GFW only inspects traffic on local Chinese internet connections — roaming traffic is exempt. So whether you buy Airalo's "China" plan or a "Hong Kong & Global" plan, you get the same GFW bypass.

This means you do not need to pay extra for "Hong Kong routing" or "APAC" plans just to access Google. A standard "China" eSIM plan works perfectly. The only real differences between plans are price, data allowance, and which Chinese carrier they partner with (affecting signal strength in remote areas).

⚠ One Limitation: ChatGPT and TikTok

While all travel eSIMs bypass the GFW, some eSIM providers route data through Hong Kong servers. ChatGPT and TikTok block Hong Kong IP addresses — so if your eSIM's roaming traffic exits through HK, you may not be able to use those two specific apps. Google, WhatsApp, Instagram, YouTube, and all other blocked sites work fine. If ChatGPT access is critical for you, check with the eSIM provider about their exit server location, or choose a provider that routes through US/Singapore servers.

💡 What to Actually Choose

For most travelers, any reputable travel eSIM "China" plan works. Nomad's China plan offers the best value ($4-25 for 1-20GB). Airalo's China plan (using China Unicom) is the most reliable. Holafly is best if you need unlimited data for heavy use. Do not overpay for "Hong Kong routing" plans — they offer no GFW advantage over standard China plans.

How to Install an eSIM: 4 Steps

1

Check Phone Compatibility

Most phones from 2019 onward support eSIM: iPhone XS and newer, Google Pixel 3a and newer, Samsung Galaxy S20 and newer. Go to Settings and search for "eSIM" or "add cellular plan." If you see the option, your phone supports it. Your phone must be unlocked (not carrier-locked).

⚠ China-mainland iPhones do NOT support eSIM — iPhones sold in mainland China use dual nano-SIM instead. If you bought your iPhone in China, you cannot use eSIM (iPhone 17e and iPhone Air are the only exceptions). iPhones purchased in Hong Kong, Macau, or any other country work normally.

2

Purchase and Receive QR Code

Buy your eSIM plan through the provider's app or website (Airalo, Nomad, Saily, Holafly). After payment, you will receive a QR code via email and in the app. Some providers also offer "direct install" where the app handles everything. Purchase at least 24 hours before your flight.

3

Install the eSIM Profile

Go to Settings → Cellular/Mobile → Add eSIM. Scan the QR code. Your phone will download the eSIM profile (takes 1-2 minutes). Label it "China Travel" or similar. Do NOT activate data roaming yet — wait until you land.

4

Activate on Arrival

When you land in China, go to Settings → Cellular/Mobile → select your travel eSIM → turn ON "Data Roaming." Your eSIM will connect to the local network. Keep your primary SIM active for calls/SMS (turn off data roaming on your primary SIM to avoid charges).

Physical SIM Cards — And Why You Need One

If your phone does not support eSIM, a physical Chinese SIM card is your alternative. But even if you have an eSIM, we strongly recommend also getting a cheap Chinese SIM card for the phone number alone. Here is why:

Where to buy a Chinese SIM card:

💡 The Dual-SIM Strategy (Recommended)

Travel eSIM + local Chinese SIM = best of both worlds. Use the travel eSIM for data to bypass the GFW (Google, WhatsApp, Instagram all work normally). Use the Chinese SIM for the phone number (app registration, verification codes, local calls). On a dual-SIM phone, set the eSIM as your data line and the Chinese SIM for calls/SMS. This is the setup most experienced China travelers use.

Important: A physical Chinese SIM means your data goes through the GFW. You will not be able to access Google, Instagram, etc. The SIM itself works for calls, texts, and local Chinese apps (Alipay, Didi, Dianping).

Pocket WiFi

Pocket WiFi devices (portable WiFi hotspots) are available for rent at Hangzhou airport and through online services like Klook. They cost approximately 30-50 RMB/day and provide WiFi for up to 5 devices. However, pocket WiFi in China has the same GFW limitation as local SIMs — all traffic goes through Chinese networks, so Google and blocked sites will not be accessible.

Pocket WiFi is best for groups traveling together who want to share one connection, or for travelers with locked phones that cannot use eSIM or foreign SIM cards. For solo travelers, an eSIM is cheaper and more convenient.

FAQ

Can I use my eSIM and my home SIM at the same time?

Yes. Most dual-SIM phones let you use one eSIM for data while keeping your physical SIM active for calls and texts. Set your travel eSIM as the primary data line and disable data roaming on your home SIM to avoid charges. This is the ideal setup — you get unrestricted internet plus your home number for 2FA codes.

How much data do I need for a week in Hangzhou?

For a 7-day trip with moderate use (Google Maps navigation, social media, web browsing, messaging), 5GB is usually sufficient. Heavy users (video streaming, video calls, uploading photos) should get 10GB. Most eSIM plans allow top-ups if you run low. WiFi is widely available at hotels and cafes, which reduces data usage.

What happens if my eSIM stops working?

First, toggle Airplane Mode on/off. If that does not work, go to Settings and check that Data Roaming is ON for the eSIM. If the issue persists, contact the provider's support through their app (most have 24/7 chat). As a backup, use hotel or cafe WiFi if mobile data fails.

Next: Essential Apps to Install

Now that you are connected, make sure you have the right apps. From navigation to food reviews — install these 12 apps before you go.

Essential Apps Guide →