China eSIM Not Working? An Ordered Fix for No Data, Wrong Line and Activation Problems

The order to check things

Where to find the settings:

• iPhone: Settings > Cellular (called Mobile Service or Mobile Data in some countries)
• Google Pixel: Settings > Network & internet > SIMs
• Samsung: Settings > Connections > SIM manager

Step-by-step fault-finding table

Steps 2, 3 and 4 cause most problems. According to an Apple’s support document about using multiple lines with a dual SIM iPhone, the first step to do is select the phone line, and then navigate to Cellular Data Options and enable the Data Roaming feature for the selected line. Ensure not to turn on Data Roaming for your home SIM to prevent roaming fees.

According to an Apple support article from September 2026 about the use of travel eSIM with iOS 26 and above, upon arrival at your destination, you might see the “Turn On Travel eSIM” prompt if you have the travel eSIM before your travel. Tap it, and choose to enable the travel eSIM for data usage.

When the switches are right but nothing loads

Some travel eSIMs use one Chinese partner, such as China Mobile, while others can use two or more networks. Check your product page or eSIM details to see which network your plan uses. If your phone can’t connect, turn off automatic network selection and choose that network yourself. 

Next, look at the APN. Check it letter by letter. One small typo error is enough to stop your data.

What to send support

You can make support's job easy by sending your order number, phone model, software version and a screenshot of your eSIM settings. In the Trip.com app, open your booking and tap customer service.

Is it the data or the apps?

A 60-second test

Disable your Wi-Fi. Go to a Chinese app such as Amap, WeChat or Trip.com App. Finally, go to a news website you visit when you were home. Lastly, open the app that isn't working for you.

Why two "China" products behave differently

There are two kinds of SIM cards for China, and they function differently:

• Travel eSIM purchased from another country: This generally uses roaming. Your device connects to a mobile tower in China, but your data is managed by the company that provides the plan. The company is usually outside mainland China. In some cases, the travel eSIM delivers data within the mainland, so two friends with “China eSIMs” can have extremely different experiences.
• Local Chinese SIM: This is simply a regular Chinese phone line. It operates according to mainland regulations, meaning apps like Google and WhatsApp cannot be accessed through this connection.

Be sure to check the product page before buying. There are some eSIMs provided by Trip.com in China that include Google Maps and ChatGPT in their names. Things may change, so you should trust the product page when you purchase.

What the provider can and can't fix

Every provider can assist you in finding out if your plan is active, checking the amount of data left on it, sending you a new eSIM, adding data to it or transferring you to another provider. Nevertheless, they cannot modify settings on your device, unlock it, or install any apps that are not supported by your subscription plan.

Setting it up so it works on arrival

Pre-departure checklist

Install now, activate later

These two words sound alike but mean different things.

• Installed: the eSIM is saved on your phone.
• Activated: the plan has connected to a network in its area, and your days start counting.

Many plans start counting only when they first connect where they work, so installing early is usually safe. Still, check your plan's rules.

A Hong Kong stopover will affect two things. First, if your coverage includes Hong Kong, your days could begin to count from the moment you connect through your stopover. Second, China Mobile Hong Kong has stated that starting 17 June 2026, their prepaid SIM cards cannot be activated in mainland China. If you have one, activate it outside of mainland China, either in Hong Kong or elsewhere.

Don’t leave installing until you land. According to a September 2026 Apple support publication, eSIM iPhones bought in mainland China can’t install an eSIM from a carrier outside the mainland while the phone is in mainland China.

Devices, dual SIM and the awkward cases

Does your phone take an eSIM at all?

Dial *#06#. If you see a number called EID, your phone supports eSIM. On iPhone, you can also look in Settings > General > About.

Where you bought your phone matters. Most iPhones sold in mainland China, and some sold in Hong Kong and Macau, use two physical SIM slots. Apple’s China mainland eSIM page lists five models that support eSIM there: iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo, iPhone 17e and iPhone Air. For Android phones, check the maker’s website for your exact model.

Locked phones

Some phones bought on a contract only work with one carrier. On iPhone, go to Settings > General > About > Carrier Lock. You want to see "No SIM restrictions". If not, ask your carrier to unlock it before your trip.

Dual SIM: the line that quietly takes your data

Only one line can use mobile data at a time. A smart setup is calls and texts on your home SIM, so bank codes still reach you, and mobile data on your travel eSIM. After any restart, take a quick look to make sure data is still on the travel line.

Hotspots, tablets and watches

The question is, can you share your data as a hotspot? Well, it depends on your plan. So check the product page. iPads with eSIM use the same steps as an iPhone. A smartwatch with its own mobile plan gets that plan from your home carrier. Also, you can ask them about travel.

When nothing works

If your phone can't use an eSIM, there are other options. An unlocked phone with a SIM slot can use a local physical SIM, and Trip.com sells China SIM cards you can pick up at the airport. Pocket Wi-Fi is handy for groups or older phones, but check the pick-up and return point on the product page before you book. In September 2026, the Trip.com pocket Wi-Fi listing for mainland China, Hong Kong and Macau used pick-up and return at Hong Kong Airport.

If you cannot get online at all

Airport Wi-Fi without a Chinese number

Good news! Big airports in China now let you log in with your passport.

• Shanghai Pudong (PVG): Join the free airport Wi-Fi. On the login page, scan your passport photo page. Shanghai Airport Group confirmed this passport login in April 2026.
• Beijing Daxing (PKX): Join "BDIA-FREE-WIFI". Take a photo of your passport page on the login page. The Beijing Municipal Government shared these steps in December 2025.
• Beijing Capital (PEK): Put your passport into a Wi-Fi machine. It prints a username and password. The Beijing Municipal Government described this method in its August 2024 arrival guide.

Wi-Fi names can change. So, you need to follow the airport signs. This is the perfect moment to message your eSIM provider.

SIM counters in the arrival hall

At Shanghai Pudong, the International Services Shanghai centre in arrivals offers China Telecom SIM cards for 7, 15 or 30 days. Shanghai Airport Group announced this service in April 2026.

In Beijing, the "Beijing Service" counters at Capital Terminal 3 and Daxing's international arrivals exit offer SIM cards. You can also book a China Mobile or China Unicom SIM online on Beijing's international website and collect it when you land. The Beijing Municipal Government announced these counters in January 2025.

Remember to bring your passport with you as the staff will check your identity. Remember, these are physical SIM cards so, your phone needs a SIM slot and must be unlocked.

Offline fallback box

A first night with zero data

Delay in landing? Get an arrangement with an exact pickup point or a hotel in proximity to the airport. Give the driver your address written in Chinese. Once you are in the hotel, get in touch with your supplier using the available Wi-Fi facility in the lobby area.

Common mistakes and failure cases

The golden rule: never delete your eSIM while you fix it. Trip.com’s China eSIM guide asks you to contact customer service first if activation fails, and support needs the original eSIM to see what went wrong.