No SIM Slot? Using an iPhone 17, Air or 18 Pro in China
Choose a China eSIM for an eSIM-only iPhone: WhatsApp, Google Maps and ChatGPT access, carrier unlock checks, backup plans and setup before departure.
Published 2026-11-03 Updated 2026-11-08
Quick answer
If your iPhone has no SIM tray, this is what it means for a trip to mainland China:
- A travel eSIM is the easy fix. You buy it online, install it at home and have data the moment you land. Roaming from your home carrier and pocket Wi-Fi also work.
- You can’t use a Chinese SIM card. There’s nowhere to put one, and Chinese carriers’ eSIMs don’t install on iPhones bought outside mainland China.
- Set everything up before you fly. Without a SIM tray, there’s no airport SIM counter to fall back on.
- Keep your home line switched on if you need texts from your bank.
Is your iPhone eSIM-only?
It depends on the model and on where you bought it. This is Apple’s list of eSIM-only iPhones, checked in November 2026:
| iPhone | No SIM tray if bought in |
|---|---|
| iPhone Air, iPhone Duo | Any country |
| iPhone 17, 17e, 17 Pro, 17 Pro Max, 18 Pro, 18 Pro Max | The US, Canada, Mexico, Japan, the UAE, Saudi Arabia, Bahrain, Kuwait, Qatar, Oman, Guam and the US Virgin Islands |
| iPhone 14, 15 and 16, all models including the 16e | The US |
Bought anywhere else, the other models in this table have a nano-SIM tray.
Look at the side of your phone. No small tray with a pinhole next to it means your iPhone is eSIM-only.
How to check whether your iPhone is unlocked
A China travel eSIM from another provider needs a SIM-unlocked iPhone. Open Settings → General → About and check Carrier Lock: “No SIM restrictions” means it is unlocked.
If you see a restriction, ask the carrier that locked the phone to unlock it before departure. Apple says only that carrier can do this, and it may take a few days. Having eSIM support or no SIM tray doesn’t prove the phone is unlocked. This is the carrier’s SIM/network lock, separate from your screen passcode; buying a different travel eSIM won’t remove it. See the general China eSIM unlock checklist.
Which eSIM to get
With no SIM tray, your eSIM is your only connection, so set up two: a main eSIM for the trip and a small backup in case the first one won’t connect. These are the seven China eSIMs I’ve reviewed.
| eSIM | Smallest plan | China app-access evidence | Refund after installing | Top-ups |
|---|---|---|---|---|
| Trip.com (review) | $0.10, 500 MB for 1 day | WhatsApp, Maps and ChatGPT: tested | Check the selected plan’s cancellation deadline and installation conditions | Yes, renew in the app |
| Yesim (review) | $3.36, 1 GB for 30 days | WhatsApp, Maps and ChatGPT: tested | No, installing counts as activation | Yes |
| Nomad (review) | $5.00, 1 GB for 7 days | WhatsApp, Maps and ChatGPT: tested | Within 30 days if not activated, except unlimited and discount-code plans | Yes, even from China, before your data runs out |
| Quibity (review) | $6.20, 1 GB for 7 days | WhatsApp and Maps: brand says yes; ChatGPT: no | No | Fixed-data plans only |
| NXTL (review) | $11.99, including $10.00 of balance | WhatsApp and Maps: brand says yes; ChatGPT: unconfirmed | No, but the balance never expires | Yes, you add balance |
| TooSim (review) | $13.99, 1 GB for 7 days | WhatsApp listed; Maps and ChatGPT access unconfirmed | No, once you’ve scanned the QR code | No |
| Saily (review) | $4.49, 1 GB for 7 days | Maps: official guidance; WhatsApp: conflicting; ChatGPT: unconfirmed | Yes, within 30 days if it hasn’t activated | Yes, add data in the app |
What I’d buy:
- Main eSIM: Trip.com, Yesim or Nomad, the three I’ve tested in China. My data guide shows how much data you need and which plan is cheapest for your trip length.
- Backup: the smallest plan from a different brand, so one problem can’t take out both. Trip.com’s costs $0.10; check the selected plan’s cancellation deadline and installation conditions before installing it. If Trip.com is your main eSIM, take Yesim’s 1 GB plan ($3.36) or Nomad’s ($5.00).
Discount codes for Yesim, Quibity and NXTL are on my Deals page.
WhatsApp, Google Maps and ChatGPT on an eSIM-only iPhone
All three worked without a separate VPN on the Trip.com, Yesim and Nomad China plans I tested. Those are app-access results, not a promise that every brand or every map-navigation feature behaves the same way. For the four brands still being tested, I use official information: Quibity excludes ChatGPT, NXTL hasn’t clearly confirmed it, TooSim hasn’t clearly confirmed Maps or ChatGPT access, and Saily’s official WhatsApp guidance conflicts. See the China eSIM app-by-app comparison before choosing a plan for a specific app.
Set it up before you fly
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Check that your iPhone is unlocked, as described above.
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Buy and install the eSIM at home, on Wi-Fi. Installing it downloads the eSIM to your phone, so you need a connection.
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Give your lines clear names, like “Home” and “China”, in Settings → Cellular, so you can tell them apart.
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When you land, choose how to use your lines. On iOS 26 or later, your iPhone offers to turn on the travel eSIM and gives you two choices, as described in Apple’s travel eSIM guide:
- Travel eSIM Only. Only the travel eSIM is used. FaceTime and iMessage keep working on your home number.
- Travel eSIM and Current eSIM. The travel eSIM handles your data and your home line stays active, so calls and texts still reach you. Your carrier may still charge roaming on that line.
On an older iOS version, choose the data line yourself in Settings → Cellular → Cellular Data.
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Turn on data roaming for the travel eSIM, and turn it off for your home line. Roaming is how a travel eSIM connects in China, and your plan already covers it.
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Install your backup eSIM too, then turn its line off (Settings → Cellular → the backup line → Turn On This Line), so it can’t connect and activate before you need it. If your main eSIM won’t connect, turn the backup on and choose it for cellular data.
FAQ
Will an iPhone Air or iPhone Duo work in China?
Yes, with a travel eSIM or your home carrier’s roaming. Neither phone takes a SIM card anywhere in the world, and Chinese carriers’ eSIMs only install on iPhones sold in mainland China.
Will a US iPhone 18 Pro work in China?
Yes, with a travel eSIM. An iPhone 18 Pro or 18 Pro Max bought in the US has no SIM tray, so you can’t use a Chinese SIM card. Install a travel eSIM like Trip.com, Yesim or Nomad before you fly. Bought in Europe or most other countries, the 18 Pro still has a SIM tray.
Can I buy a SIM card at the airport for my US iPhone 17?
No. iPhones bought in the US since the iPhone 14 have no SIM tray, so a Chinese SIM card has nowhere to go. Buy a travel eSIM before you fly instead.
Do I need a VPN?
Not for WhatsApp, Google Maps or ChatGPT on the Trip.com, Yesim and Nomad mobile-data connections I tested in China: all three apps worked without a separate VPN. International data routing isn’t a VPN app, and these results don’t apply to a different connection such as hotel Wi-Fi.
Will I still get texts from my bank?
Yes, if you keep your home line on: when iOS asks, choose Travel eSIM and Current eSIM. Your carrier may charge roaming on that line, so check its rates before you go.