Short answer: most older iPhones sold in mainland China do not support eSIM, but that is no longer true for every model. According to Apple’s March 2026 guidance, iPhone 17e and iPhone Air are the only iPhone models that currently support eSIM in mainland China. The mainland-China models are iPhone 17e model A3635 and iPhone Air model A3518.
There is an important travel restriction: these two mainland-China models can activate an eSIM from a local carrier while outside mainland China, but a non-mainland-China carrier eSIM cannot be installed while the phone is physically located in mainland China. Location Services must also be enabled for overseas activation.
Which mainland China iPhones support eSIM in 2026?
Apple currently identifies two supported mainland-China iPhone models:
| Device | Mainland China model | SIM configuration |
|---|---|---|
| iPhone 17e | A3635 | Supports eSIM or a physical nano-SIM |
| iPhone Air | A3518 | eSIM only; no physical SIM support |
| Most earlier mainland-China iPhones | Varies | Generally use physical SIM configurations rather than eSIM |
This is a significant change from older advice that said all mainland-China iPhones lacked eSIM. That statement is now outdated. However, it is still unsafe to assume that every recent China-market iPhone supports eSIM. Confirm the exact device before buying.
For a broader device check, visit the Code eSIM compatibility guide.
What does “mainland China iPhone” mean?
A mainland-China iPhone is a device manufactured for sale in mainland China. It is not the same as an overseas iPhone being used during a trip to China.
This distinction matters because there are two different questions:
- Can a traveler use an overseas eSIM-capable iPhone in China? Often yes, if the phone is unlocked and the selected travel plan supports the device and destination.
- Can an iPhone purchased in mainland China install an eSIM? Only certain models currently support it, and overseas eSIM activation is subject to location restrictions.
Hong Kong and Macao models can also have different SIM configurations from mainland-China and US models. Never infer compatibility from the language, appearance or storage capacity of the phone.
How to check whether your iPhone supports eSIM
1. Find the exact model number
- Open Settings.
- Tap General, then About.
- Find Model Number.
- Tap the part number once if needed to reveal the model number beginning with “A”.
For the currently supported mainland-China models, look for A3635 on iPhone 17e or A3518 on iPhone Air. If you have another model, check Apple’s current specifications and your eSIM provider’s compatibility information.
2. Look for an EID
On the About screen, scroll down and look for an EID. The EID identifies the device’s embedded SIM hardware. Apple also lists EID among the identifiers available under Settings → General → About.
If there is no EID and no eSIM setup option, the phone is unlikely to support eSIM. An EID alone does not guarantee that every travel plan can be activated, because carrier, region and activation-location rules still apply.
3. Check for “Add eSIM”
Open Settings → Cellular or Mobile Data and look for Add eSIM. The wording can vary slightly by iOS version and region.
Seeing this option is a useful signal, but it is not a complete compatibility test. You still need to confirm that the phone is unlocked and that the travel plan supports the exact model.
4. Confirm that the phone is carrier unlocked
Go to Settings → General → About and find Carrier Lock. A message such as “No SIM restrictions” normally indicates that the phone is unlocked.
This check is particularly important for second-hand or contract phones purchased overseas. An eSIM-capable device can still reject another provider’s plan if it is locked to one carrier.
Can a mainland-China iPhone install a travel eSIM before departure?
For mainland-China iPhone 17e model A3635 and iPhone Air model A3518, Apple’s current documentation says that eSIMs from non-mainland-China carriers cannot be installed while the device is located in mainland China.
When traveling outside mainland China, these models can activate an eSIM from a local carrier. Location Services must be enabled. This means the usual advice to install a travel eSIM at home before departure may not apply to these two mainland-China models.
A practical preparation flow is:
- Check the device model and carrier-lock status before buying.
- Save the QR code and installation instructions offline.
- Confirm whether the plan’s validity starts at installation or first network connection.
- After arriving outside mainland China, connect to reliable Wi-Fi.
- Enable Location Services and follow the provider’s installation steps.
Use the English eSIM installation guide for the general iPhone setup flow, while following any special instructions supplied with your plan.
How many eSIMs can these China models store?
Apple says that an eSIM-capable iPhone 17e or iPhone Air purchased in mainland China can have up to two eSIMs. If two profiles are already stored, one must be deleted before another travel eSIM can be activated abroad.
Be careful before deleting a mainland-China carrier eSIM. Apple notes that reactivating a deleted domestic eSIM after returning may require another visit to the carrier’s physical store. Apple also advises users not to erase an eSIM merely as a troubleshooting step unless their carrier tells them to do so.
What if your mainland-China iPhone does not support eSIM?
You still have several ways to get mobile data while traveling:
- Use a compatible backup phone: install the travel eSIM on an unlocked overseas-model iPhone, Pixel or Samsung device and share data by hotspot if the plan allows it.
- Buy a physical destination SIM: useful when your phone has a nano-SIM slot and you do not mind replacing a card.
- Use international roaming: easy to set up, but check the price and high-speed data allowance.
- Rent pocket Wi-Fi: can work for groups, although it adds another device to carry, charge and return.
If your device passes the checks, compare destination options such as Japan eSIM plans, Korea eSIM plans or the China eSIM guide for international travelers.
30-second travel eSIM checklist
- Identify the exact A-number model.
- Confirm that an EID appears in Settings → General → About.
- Check for Add eSIM under Cellular or Mobile Data.
- Confirm that Carrier Lock shows no SIM restrictions.
- Read the plan’s installation location and activation rules.
- Check the coverage area, validity period, hotspot policy and data allowance.
- Keep reliable Wi-Fi available for setup.
- Do not delete an existing eSIM without checking reactivation rules.
Frequently asked questions
Do mainland China iPhone 15 and iPhone 16 models support eSIM?
Do not decide from the series name alone. As of June 2026, Apple specifically lists iPhone 17e and iPhone Air as the only iPhone models supporting eSIM in mainland China. Check the exact A-number, EID and Add eSIM option for any other device.
Does an Add eSIM button guarantee that a travel eSIM will work?
No. The phone must also be unlocked, compatible with the plan and allowed to activate the profile in its current location. Carrier and service-provider requirements can still apply.
Can iPhone 17e or iPhone Air bought in mainland China install a foreign eSIM inside mainland China?
Apple currently says no. A non-mainland-China carrier eSIM cannot be installed on these mainland-China models while the phone is located in mainland China. Overseas activation requires Location Services.
Do all US iPhones support eSIM?
Many recent US models support eSIM, but you should still check the exact model, carrier-lock status and travel-plan requirements. A second-hand or contract phone may remain locked.
Can I reinstall an eSIM after deleting it?
Not always. Some QR codes can be used only once, and some providers require a new activation code. Contact the provider before deleting a travel eSIM. A deleted mainland-China carrier eSIM may require in-store reactivation.
Can I keep my normal number active while using a travel eSIM?
Many Dual SIM iPhones can keep the primary line available for calls or verification messages while using the travel eSIM for data. Your primary carrier may charge roaming fees, so check the selected data line and roaming settings.
Bottom line
The answer to “do mainland China iPhones support eSIM?” changed in 2026. iPhone 17e and iPhone Air are now clear exceptions, but overseas travel-eSIM activation still has location and device restrictions. Most older mainland-China models should not be assumed compatible.
Use this order before purchasing: check the model → find the EID → confirm Add eSIM → check Carrier Lock → read the plan rules. If your device is compatible, continue to the compatibility checklist and choose a destination plan. If you purchase the wrong plan and have not used it, review the English refund policy and contact support promptly.
Sources: Apple Support: Using eSIM with your iPhone in China mainland, Apple Support: Use eSIM while traveling internationally, and Apple Support: Find the EID or IMEI. Device and carrier policies can change. Last reviewed June 25, 2026.