How to Set Up a China eSIM on iPhone (2026 Guide)

Before installing a China eSIM on your iPhone, first choose and purchase a suitable plan. If you have not selected a provider, compare the best China eSIMs for travelers. Once you have chosen a plan, follow our step-by-step guide to buying a China eSIM online before continuing with the installation steps below.

Setting up a China eSIM on an iPhone usually takes less than ten minutes, but one wrong setting can leave you without mobile data after landing. The safest approach is to buy and install your travel eSIM before you enter mainland China, keep your primary SIM active only for the services you need, and switch cellular data to the travel eSIM when you arrive.

This guide explains the complete process: checking whether your iPhone is compatible, installing an eSIM by QR code or manual entry, configuring Dual SIM correctly, turning on data roaming, testing the connection, and fixing common activation problems.

Quick answer: On your iPhone, go to Settings > Cellular (or Mobile Data) > Add eSIM > Use QR Code. Scan the QR code from your eSIM provider, label the new line “China eSIM,” select it for cellular data, turn off Cellular Data Switching, and enable Data Roaming for the travel eSIM. Install it before departure, but activate or start using it according to your provider’s instructions.

Before You Start: China Travel eSIM vs. a Local Chinese eSIM

These are not the same product.

A China travel eSIM is normally sold by an international eSIM provider. It gives visitors mobile data in mainland China through a partner network. Most plans are data-only, so they do not include a mainland Chinese phone number.

A local Chinese carrier eSIM is issued directly by China Mobile, China Telecom, or China Unicom. Apple’s 2026 guidance says that local eSIM activation in mainland China is limited to supported mainland-China iPhone models and requires an in-store identity check. This restriction does not describe the usual international travel eSIM purchased by a visitor for an overseas eSIM-capable iPhone.

This article focuses on international travel eSIMs for foreign visitors to China.

If you have not chosen a plan yet, compare coverage, data allowances, hotspot policies, activation rules, and international service access in our guide to the best China eSIMs for travelers.

What You Need Before Installing a China eSIM

Prepare the following before opening your iPhone settings:

An eSIM-compatible and carrier-unlocked iPhone
A stable Wi-Fi connection
The eSIM provider’s QR code, activation link, or manual installation details
The provider’s APN instructions, if any
Your travel dates and the plan’s activation policy
A second device or printed copy of the QR code if you plan to scan it

Do not delete the provider’s email after installation. Keep the QR code, activation code, order number, APN details, and customer-support information until your trip is over.

Step 1: Check Whether Your iPhone Supports eSIM

Most eSIM-capable international iPhones released since the iPhone XS, iPhone XS Max, and iPhone XR can use a travel eSIM. Compatibility can still vary by model, country of purchase, carrier lock, and regional hardware configuration.

The quickest check is:

Open Settings.
Tap Cellular or Mobile Data.
Look for Add eSIM.

You can also open Settings > General > About and look for an EID. An EID normally indicates that the device contains eSIM hardware.

Important: iPhones purchased in mainland China

Do not assume that a mainland-China iPhone supports ordinary international travel eSIM installation. Apple’s current guidance states that only specific mainland-China models support eSIM there. It also states that non-mainland carrier eSIMs cannot be installed on those supported mainland models while the device is located in mainland China.

Check the exact model number under Settings > General > About > Model Number and verify it against Apple’s current documentation before buying a plan.

Important: iPhones purchased in Hong Kong or Macao

Some Hong Kong and Macao models use two physical nano-SIM cards instead of eSIM, while other models support eSIM. Check the exact model rather than relying only on the iPhone generation name.

Step 2: Check Whether Your iPhone Is Carrier-Unlocked

An eSIM-compatible phone can still reject a travel eSIM if it is locked to your home carrier.

To check:

Go to Settings > General > About.
Scroll to Carrier Lock.
Look for No SIM restrictions.

If you see a carrier name or a restriction message, contact your carrier before buying or installing the eSIM. An eSIM provider cannot remove a carrier lock.

Step 3: Understand When Your Plan Starts

This is the most important provider-specific rule.

Depending on the eSIM, the validity period may begin:

As soon as the eSIM is installed
When it first connects to a supported network in China
On a date selected during purchase
When you manually activate the plan in the provider’s app

Read the activation instructions before installation. If the plan starts immediately when installed, wait until shortly before departure. If it starts only after connecting in China, installing it at home is usually safer.

As a general rule, complete the installation while you still have reliable Wi-Fi and easy access to customer support. Do not leave the first installation attempt until you are standing at the airport or have already entered mainland China.

Step 4: Install the China eSIM on Your iPhone

Apple supports several installation methods. Your provider will normally tell you which one to use.

Method 1: Install with a QR code

This is the most common method.

Connect your iPhone to Wi-Fi.
Open Settings.
Tap Cellular or Mobile Data.
Tap Add eSIM.
Tap Use QR Code.
Scan the QR code supplied by your provider.
If requested, enter the confirmation code.
Tap Continue and then Add Cellular Plan or Add eSIM.
Wait for the plan to appear under your SIMs.

The wording may vary slightly by iOS version and region.

What if the QR code is displayed on the same iPhone?

If your provider supports direct recognition, open the QR code in the email or provider app, press and hold it, and select the option to add the eSIM. Some providers also supply an iOS installation link.

If that option does not appear, display the QR code on a laptop, tablet, or another phone. You can also print it. If no second screen is available, use the manual installation method below.

Method 2: Install with an activation link or provider app

Some providers include an Install eSIM, Activate eSIM, or similar button in their iPhone app or confirmation email.

Open the provider’s app or email on your iPhone.
Tap the installation or activation link.
Allow the link to open iPhone settings.
Review the plan details.
Tap Continue and confirm that you want to add the eSIM.

Use only the official app or the original order email. Do not enter activation details into an unrelated website.

Method 3: Enter the eSIM details manually

Use this method if the QR code will not scan or is displayed on the same device.

Go to Settings > Cellular/Mobile Data > Add eSIM.
Tap Use QR Code.
Tap Enter Details Manually.
Enter the SM-DP+ Address provided by the eSIM company.
Enter the Activation Code.
Enter a confirmation code only if the provider supplied one.
Tap Next and complete the installation.

Copy every character exactly. Extra spaces, missing hyphens, or confusing the letter O with the number 0 can cause an installation error.

Step 5: Label Your SIMs Clearly

After installation, iPhone asks you to label the lines. Clear labels reduce the risk of using expensive roaming data from your home carrier.

Use labels such as:

Primary or Home for your regular SIM
China eSIM or Travel Data for the new plan

You can change labels later under Settings > Cellular/Mobile Data, then tap the relevant line and select Cellular Plan Label.

Step 6: Configure Dual SIM Correctly

Most travelers want to keep their regular number available for calls and verification messages while using the China eSIM for data.

Use the following setup:

iPhone setting	Recommended selection
Default Voice Line	Primary/Home SIM
iMessage and FaceTime	Primary/Home SIM, unless you have another preference
Cellular Data	China eSIM
Allow Cellular Data Switching	Off
Data Roaming on Primary SIM	Off
Data Roaming on China eSIM	On, if required by the provider

Why turn off Cellular Data Switching?

When Cellular Data Switching is enabled, the iPhone may use your primary line for data in some situations. That can create unexpected international roaming charges. Turning it off keeps mobile data assigned to the China eSIM.

Can you still receive calls and text messages on your normal number?

Usually, yes. Keeping the primary line turned on allows it to remain available for calls and SMS, subject to your home carrier’s roaming support and fees.

Receiving an SMS is often free, but this is not universal. Answering calls, making calls, sending SMS messages, or using voicemail abroad may incur charges. Confirm the rules with your home carrier before departure.

Step 7: Turn On Data Roaming for the China eSIM

Many travel eSIMs connect through a roaming partner network, so Data Roaming must be enabled on the travel line even though you are trying to avoid roaming charges on your home line.

To configure it:

Open Settings > Cellular or Mobile Data.
Under SIMs, tap China eSIM.
Make sure Turn On This Line is enabled.
Tap Cellular Data Options.
Turn Data Roaming on.

Then return to the previous screen, tap your Primary line, open Cellular Data Options, and make sure Data Roaming is off for that line.

This distinction is critical:

Travel eSIM roaming: often required for the purchased plan to work
Home SIM roaming: usually best left off to prevent unexpected charges

Always follow the provider’s instructions if they differ.

Step 8: Check the APN Settings

Many eSIMs configure the Access Point Name automatically. Others require a specific APN.

If your provider gives you an APN:

Open Settings > Cellular/Mobile Data.
Tap China eSIM.
Tap Cellular Data Network or Mobile Data Network if the option is available.
Enter the APN exactly as provided.
Leave the username and password blank unless instructed otherwise.

Do not guess or copy the APN from another eSIM brand. Incorrect APN settings can prevent cellular data from working. Apple also notes that some carriers do not allow users to view or edit these fields.

Step 9: Activate the eSIM When You Arrive in China

After landing:

Turn off Airplane Mode.
Open Settings > Cellular/Mobile Data.
Confirm that the China eSIM line is on.
Select China eSIM under Cellular Data.
Confirm that Allow Cellular Data Switching is off.
Confirm that Data Roaming is on for the China eSIM.
Wait several minutes for the phone to register on a network.
Open a webpage or map app to test mobile data.

Network registration is not always immediate. The iPhone may first show Searching, No Service, or a local network name before the data session becomes active.

If your provider has an app, open it over airport Wi-Fi and check whether the plan needs a separate activation step.

Common China eSIM Problems and How to Fix Them

“Unable to Activate eSIM” or “Cellular Plan Cannot Be Added”

Check the following:

The iPhone supports eSIM and is not carrier-locked
The device has a stable Wi-Fi connection
The QR code has not already been used
The plan has not expired
The activation details were entered correctly
The maximum number of stored eSIM profiles has not been reached
The provider permits installation in your current location

Restart the iPhone and try once more. Do not repeatedly scan the same code if the provider says it is single-use. Contact support with the order number and a screenshot of the error.

The eSIM is installed but there is no internet in China

Work through this order:

Confirm that the eSIM line is turned on.
Confirm that it is selected under Cellular Data.
Turn on Data Roaming for the eSIM.
Turn off Cellular Data Switching.
Check the APN against the provider’s instructions.
Turn Airplane Mode on for about 30 seconds, then turn it off.
Restart the iPhone.
Leave network selection on Automatic, unless the provider tells you to select a particular network.
Check the provider app or account page to confirm that the plan is active and still has data.

If the signal appears but data does not load, the most common causes are an incorrect cellular-data line, disabled travel-line roaming, or a missing APN.

The iPhone shows SOS or No Service

Move to an open area and wait several minutes. Then toggle Airplane Mode for about 30 seconds. Confirm that automatic network selection is enabled.

If the problem continues, check the provider’s supported networks and try the network named in its instructions. Coverage inside underground stations, elevators, rural valleys, and some buildings may be weaker.

The QR code will not scan

Increase the brightness of the screen displaying the code
Make sure the entire QR code is visible and not cropped
Clean the iPhone camera lens
Display the code on another device
Use the manual SM-DP+ address and activation code

If the code was already used, ask the provider whether it can be reissued. Many eSIM QR codes cannot be installed twice.

The eSIM disappeared after being deleted

Deleting an eSIM is not the same as turning it off. Do not delete the profile during troubleshooting unless the provider explicitly tells you to do so.

Some providers allow reinstallation; others issue single-use profiles and require support to generate a replacement. Keep the eSIM installed until the trip is complete.

Personal hotspot is missing or not working

Hotspot support depends on the plan and carrier profile. First confirm that your plan permits tethering. Then check whether the provider requires a hotspot APN.

Go to Settings > Personal Hotspot and enable Allow Others to Join. If the menu is missing, verify the APN instructions or contact the eSIM provider.

*If your eSIM is enabled but still shows no signal or mobile data after these checks, follow our China eSIM troubleshooting guide in order before deleting the eSIM profile.

How to Avoid Unexpected Roaming Charges

Use this checklist before departure and again after landing:

Select China eSIM for cellular data
Turn off Allow Cellular Data Switching
Turn off Data Roaming on the primary SIM
Turn on roaming only for the travel eSIM when required
Consider disabling the primary line entirely if you do not need calls or SMS
Turn off Wi-Fi Assist if you want stricter control over cellular use
Check your home carrier’s voice, SMS, and voicemail roaming charges

Turning off data roaming does not necessarily block voice or SMS charges. If you want to eliminate the risk from your home line, turn that line off under Settings > Cellular/Mobile Data. The trade-off is that you will not receive calls or verification messages on that number.

Will a China Travel eSIM Give You a Chinese Phone Number?

Usually not. Most travel eSIMs are data-only. They work for maps, ride-hailing, translation, browsing, messaging apps, and app-based calls, but they do not provide a +86 mobile number.

This matters because some local services may request a mainland Chinese number for registration or verification. Alipay and other traveler-oriented services can often be set up with a foreign number, but individual merchants, Wi-Fi portals, reservations, or local apps may have different requirements.

If a Chinese phone number is essential for your trip, verify that feature before purchase rather than assuming every “China eSIM” includes one.

Does a China Travel eSIM Provide Access to International Services?

Many international travel eSIMs route data through an overseas network and may provide access to international services differently from a standard local mainland SIM. This varies by provider, plan, roaming partner, routing arrangement, and current network policy.

Do not rely only on the word “China” in the product name. Check the provider’s current description and support documentation for international service accessibility, latency, hotspot use, and any app-specific limitations.

If mobile data works but Google, WhatsApp or another international service does not, the issue may be the provider’s network routing rather than the iPhone installation. Read our guide to how China eSIMs work with Google, WhatsApp and other international apps before changing the APN, deleting the eSIM or reinstalling the profile.

Should You Install the eSIM Before Arriving in China?

Yes, in most cases.

Installing before departure gives you reliable Wi-Fi, access to the purchase email, and time to contact support. It also reduces the risk of discovering a compatibility, carrier-lock, QR-code, or payment problem after landing.

The exception is a plan whose validity begins immediately upon installation. In that case, install it shortly before departure or follow the provider’s stated activation timing. Even then, save all installation details offline before entering China.

Frequently Asked Questions

How long does it take to install a China eSIM on an iPhone?

The installation itself normally takes a few minutes. Network activation after arrival may take longer, especially if the iPhone needs to register with a partner network.

Do I need Wi-Fi to install an eSIM?

Usually, yes. The iPhone needs an internet connection to download and activate the eSIM profile. Use stable Wi-Fi during installation.

Should data roaming be on for a China eSIM?

For many international travel eSIMs, yes. Turn roaming on for the travel eSIM if the provider requires it, but keep roaming off for your home SIM unless your home plan includes China.

Can I use my normal SIM and a China eSIM at the same time?

Yes, on supported iPhones. You can normally keep your home number active for calls and SMS while using the China eSIM for cellular data. Carrier fees may still apply to the home line.

Can I install the eSIM after arriving in China?

It may be possible on many international iPhones and travel plans, but it is riskier. Installation can depend on Wi-Fi availability, provider rules, the device’s region and model, and access to the original activation details. Install before departure whenever the plan’s validity policy allows it.

Can I reuse the QR code on another iPhone?

Usually not. Many QR codes are tied to one eSIM profile and become invalid after first use. Never delete or transfer the profile without checking the provider’s policy.

Is 5G available with a China travel eSIM?

Some plans support 5G, while others are limited to LTE or depend on local coverage and partner-network agreements. Treat 5G as a plan-specific feature, not a guarantee.

Final Setup Checklist

Before leaving Wi-Fi, confirm all of the following:

Your iPhone supports eSIM and is carrier-unlocked
The China eSIM appears under Cellular or Mobile Data
You know when the plan’s validity begins
The new line is labeled clearly
China eSIM is selected for cellular data
Cellular Data Switching is off
Roaming is off on the primary line
Roaming is on for the travel line if required
The APN matches the provider’s instructions
The QR code and manual activation details are saved offline
You have not deleted the eSIM after installation

Correct installation is only half of the setup. The settings that matter most after arrival are selecting the China eSIM for cellular data, disabling cellular-data switching, and enabling roaming on the travel line.

Still choosing a plan? Compare the leading options in our Best China eSIMs for Travelers guide before buying.