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Quick answer: getting a Chinese eSIM before your trip takes about 10 minutes. Download a provider app like Airalo or Saily or a Drimsim SIM as a backup option, choose a China plan, pay with your international card, install the eSIM profile over Wi-Fi, and keep it off until you land. The most important rule: do all of this before your flight. Installing after you land in China is much harder because you need internet to download the eSIM profile, and airport Wi-Fi is not reliable for this.
Last reviewed: August 2026. Prices, opening hours and rules can change; confirm the latest details before your trip.
Buy your China eSIM on Airalo before you fly
This guide walks through the entire process — when to buy, which provider to choose, how to install, what to do after landing, (see also China eSIM with a phone number) and what to try if activation fails. It is written for first-time eSIM users who have never set one up before.
When to buy your China eSIM
Buy your eSIM one to three days before your flight. This gives you enough time to install it and confirm it appears in your phone settings, but not so early that the plan validity window starts counting down (most plans start when they first connect to a network in China, but some start from installation — check the terms).
Do not buy it at the airport. Do not buy it on the plane assuming you will install it after landing. Buy it at home, with stable Wi-Fi, at a time when you can focus for 10 minutes. If something goes wrong during installation, you want to be at home with access to customer support, not standing in an immigration line.
Which eSIM provider to choose
For a first-time eSIM user traveling to China, these three providers are the most commonly recommended:
| Provider | Best for | What to check |
|---|---|---|
| Airalo | Short tourist trips, first-time eSIM users, reliable app experience | China plan availability, data amount, activation policy |
| Saily | Competitive pricing, simple app, alternative data packages | China coverage, hotspot support, refund policy |
| Yesim | Longer stays, larger data needs, more flexible plans | Plan duration options, hotspot rules, app access notes |
All three typically provide access to Google, WhatsApp, Gmail, and Instagram on their China plans. None provide a Chinese phone number — they are data-only. What you can still do in China without a Chinese phone number. For a detailed comparison of all major providers, see the best eSIM for China travel guide.
Step 1: Check your phone before buying
Two things to confirm before you pay:
- Your phone supports eSIM. On iPhone: Settings > Cellular > Add eSIM. If you see this option, your phone supports eSIM. On Android: Settings > Connections > SIM Manager > Add eSIM. The exact path varies by brand (Samsung, Google Pixel, etc.). Most phones released outside China after 2019 support eSIM. If your phone does not have the option, you cannot use an eSIM and will need a physical travel SIM instead.
- Your phone is unlocked. If your phone was bought through a carrier on a payment plan, it may be locked. Contact your carrier and ask “is my phone unlocked?” before buying an eSIM. A locked phone will reject eSIMs from other providers.
Step 2: Buy the eSIM plan
Download your chosen provider’s app (Airalo, Saily, or Yesim) from the App Store or Google Play. Create an account — you typically only need an email address. Search for “China” in the app, review the available plans, and choose one.
For a one to two week trip, 3-5 GB is usually enough if you use hotel Wi-Fi for large downloads and turn off automatic photo backup. For a longer trip or if you plan to use hotspot, video calls, or heavy map usage, choose 5-10 GB or a plan with easy top-ups.
Pay with your international credit or debit card. The major eSIM apps accept Visa and Mastercard. Some also accept Apple Pay or Google Pay. After payment, the eSIM is linked to your account and ready to install.
Step 3: Install the eSIM profile
This is the step where most problems happen if you rush. Follow the provider’s instructions exactly. The process typically goes one of two ways:
Option A: App-based installation. The provider’s app walks you through installation with on-screen steps. Tap “Install eSIM” or “Set up” and follow the prompts. Your phone will switch to the settings screen where you confirm the installation. This is the easiest method and available on Airalo and Saily.
Option B: QR code installation. The provider gives you a QR code in the app or by email. On iPhone, go to Settings > Cellular > Add eSIM and scan the QR code. On Android, go to Settings > Connections > SIM Manager > Add eSIM > Scan QR code. Do not scan the QR code with your camera app — it must be scanned through your phone’s cellular or SIM settings.
After installation, your phone will show a new line in the cellular or SIM settings. It may be labeled “Travel,” “Secondary,” or with the provider’s name. Rename it to something recognizable like “China eSIM” so you can find it easily later.
Step 4: Keep the eSIM turned off until you land
After installation, go to your phone’s cellular or SIM settings and turn the eSIM line OFF. Do not turn it on before your flight. Most China eSIM plans start their validity period when they first connect to a network in China, but some start from the moment of activation. Turning it off until you land ensures you do not accidentally start the clock early.
Also: keep your home SIM active. Set your home SIM as the default for voice calls and SMS so you can still receive bank verification codes if needed. Set the eSIM line as the default for mobile data — but keep it turned off for now.
Step 5: Save everything offline
Before you leave for the airport, save these things where you can access them without internet:
- Screenshot of the QR code (if your provider uses one)
- Screenshot of the APN settings (your provider should list these in the setup instructions)
- Provider’s support email or in-app chat link
- Your order or confirmation number
If the eSIM does not activate smoothly, you will need these. Do not rely on loading the app or checking your email at the airport.
Step 6: Activate after landing in China
After your plane lands and you are in the terminal:
- Go to Settings > Cellular (or SIM Manager on Android).
- Turn the eSIM line ON.
- Select the eSIM line for mobile data.
- Enable data roaming for the eSIM line if the provider’s instructions say to (most China eSIMs require this).
- Wait one to two minutes. Your phone should connect to a Chinese network and the signal bars should appear.
- Open a browser and load a webpage, or open Google Maps, to confirm data is working.
If it does not connect within a few minutes, do not panic and delete the eSIM profile. Try these quick fixes first:
- Toggle airplane mode on and off.
- Restart your phone.
- Move to a more open area — airport basements can have weak signal.
- Check that your home SIM is not still set as the data line.
What to do if the eSIM still does not work
If the quick fixes above do not work, use airport or hotel Wi-Fi to open your provider’s app and check the following:
- Is the plan showing as active in the app?
- Are the APN settings correct? Some providers require you to manually enter APN details in your phone’s eSIM settings. Compare what you have with the instructions you saved offline.
- Does the provider have a live support chat? Airalo, Saily, and Yesim all offer in-app chat support.
For detailed troubleshooting, see the China eSIM not working fixes guide.
While you troubleshoot, keep your home SIM available for emergency data. Enable data roaming on your home SIM temporarily if you absolutely need internet. The cost is higher, but it is better than being stranded with no connection.
FAQ
How early should I buy my China eSIM before the trip?
Buy it one to three days before your flight. This gives you time to install and confirm it works in your phone settings, without starting the plan validity window too early. Do not wait until the day of departure — if something goes wrong during installation, you want time to contact support.
Do I need Wi-Fi to install a China eSIM?
Yes. You need internet to download the eSIM profile. Install it at home over Wi-Fi before your flight. Do not assume you can install it at the airport or after landing — free airport Wi-Fi in China often requires a phone number or WeChat login, and it may not be reliable enough for an eSIM installation.
Can I install the eSIM and keep my home SIM active at the same time?
Yes. Most modern phones support dual SIM: one physical SIM and one eSIM, or two eSIMs. Keep your home SIM active for calls and SMS (especially for bank verification codes), and use the eSIM for mobile data. In your phone settings, set your home SIM as the default for voice and SMS, and the eSIM as the default for data. Turn off data roaming on your home SIM to avoid charges.
What if my phone does not support eSIM?
If your phone does not support eSIM, you cannot use an eSIM — it is a hardware requirement, not an app you can download. Your alternatives are: a physical travel SIM bought before departure, a local China SIM bought after arrival (requires passport registration at a carrier store), or international roaming through your home carrier. See the China eSIM ultimate guide for a full comparison of all options.
Related China eSIM and travel guides
- Best eSIM for China Travel — compare Airalo, Saily, Yesim, Nomad, and Holafly side by side
- China eSIM Ultimate Guide for Travelers — compatibility, setup, data amounts, and troubleshooting
- Airalo China eSIM Review — detailed Airalo plan review with pricing and setup walkthrough
- China eSIM Not Working? Quick Fixes — troubleshoot activation, APN, and connection problems
- Does Airalo Work in China? — what Airalo does well, when it has limits, and what to expect
Editor note: eSIM plan details, activation rules, app interfaces, and provider support options can change. Use this guide as a practical workflow, then follow your specific provider’s current instructions when you buy.
Before-trip eSIM wording
Useful related searches include how to get a Chinese eSIM before trip, eSIM card for China travel, China travel eSIM card, and activate eSIM before flight. Buy and install before departure when possible, but only turn on the travel line when the provider tells you activation will not start too early.