The editor lives in mainland China (since 2018) and uses travel eSIMs first-hand for firewall-free data — Nomad eSIM (tested 2026-09), Holafly (2026-04) and Airalo (2025-11). Some links are affiliate links (disclosed); we only point at products we would use ourselves.
Fact-check (7 Jul 2026): the roaming-eSIM firewall bypass, the install-before-you-fly constraint, and the April 2026 VPN crackdown (“拔线潮”) were re-verified against 2026 connectivity and VPN-status reporting. Nomad eSIM's plans, prices, networks, hotspot, activation and refund terms were checked against Nomad's China page, help centre and terms on 10 Sep 2026. Review and booking counts are given as ranges since they move.
Two things make connectivity in China different from anywhere else: the Great Firewall blocks Google, WhatsApp, Instagram, Gmail and ChatGPT, and the apps you actually need on the ground (Alipay, WeChat, DiDi) want an SMS code sent to a phone number. A travel eSIM solves the first problem cleanly. Here is which one to buy and how to set it up.
The eSIM we recommend: Nomad eSIM
Nomad eSIM is the one we'd start with: its China plans come in both shapes — unlimited per day, or a fixed amount of data — so it fits either way of using a phone. The plans run on China Unicom and China Telecom (4G/5G) and route traffic to international servers, which is why WhatsApp, Instagram, Facebook and X work without a VPN (the connection is not encrypted the way a VPN's is). It is rated Excellent on Trustpilot across more than 40,000 reviews. Tested again in September 2026 on a Xiaomi 13: Google and Facebook loaded normally with no VPN, and the connection was quick.
- Unlimited plans: 3 to 10 days, US$12–US$33. High-speed data resets every 24 hours, then the line stays up at 512kbps — fine for messaging and maps, slow for video.
- Fixed-data plans: 1–50 GB, US$4–US$35. Cheaper if your use is light and predictable. If one runs out you can add data to it from inside China (Nomad confirmed this to us in September 2026); what you cannot do from inside China is buy a brand-new plan, so land with one installed.
- No friction: QR install before you fly, hotspot supported (not guaranteed on every device), the plan starts when it first connects in China, 60 days to activate, and a refund is possible before the eSIM is installed.
Prices on Nomad's China page, 10 Sep 2026 — unlimited: 3 days US$12 · 5 days US$18 · 7 days US$25 · 10 days US$33; fixed data: 1 GB / 7 days US$4 · 3 GB / 30 days US$9 · 5 GB / 30 days US$13.50 · 10 GB / 30 days US$17 (sale; usually US$22) · 20 GB / 30 days US$25 (sale; usually US$30) · 50 GB / 45 days US$35.
Get Nomad eSIM for China
Choose an unlimited or fixed-data plan, install it by QR before you fly, and buy enough to cover the whole trip.
Nomad eSIM is a paid partner on this page; the comparison below is ours.
How much data do you need?
Rough sizing for a phone-only traveler (maps, messaging, translation, QR payments). Double it if you tether a laptop.
| Trip length | Light | Normal | Heavy / hotspot |
|---|---|---|---|
| 3–5 days | 1–3 GB | 3–5 GB | 5–10 GB |
| 7 days | 3–5 GB | 5–10 GB | 10–20 GB |
| 14 days | 5–10 GB | 10–20 GB | 20 GB+ |
Per-day vs total package: pick a per-day plan if you want a predictable daily allowance (and don't mind it resetting each day); pick a total-data package if your usage is uneven across the trip. Always check the validity window matches your dates before you pay.
On Nomad eSIM that is the 5 GB plan (US$13.50) for a light week, 10 GB (US$17) for normal use, and either 20 GB (US$25) or the 7-day unlimited plan (US$25) for heavy use or hotspot days.
How to install it (2 minutes — before you fly)
The one rule that trips people up: set it up at home, not at the airport in China. Apple documents that a non-mainland carrier's eSIM cannot be installed while the phone is in mainland China — and because that follows the phone's location rather than its connection, airport Wi-Fi will not rescue you.
- Check compatibility: most iPhone XS-and-later and recent Android phones support eSIM (Settings → search “eSIM”) — and the phone must not be carrier-locked, or it may refuse a foreign eSIM. If you bought it on a contract, ask your carrier to unlock it before you buy.
- Buy before you fly: you receive a QR code by email.
- Scan it (still at home): Settings → Cellular/Mobile → Add eSIM → scan the QR. This adds the line; it does not remove your home SIM.
- On arrival: turn the eSIM on for data, leave your home SIM on for calls/SMS. You're online, with Google and WhatsApp working. If nothing loads, the usual fix is in Settings: switch Data Roaming on for the eSIM line only (a travel eSIM works as roaming by design), keep it off for your home SIM so that line carries SMS and nothing else, then toggle Airplane Mode once.
You still need your home SIM (the combo)
This is the part travelers miss. A travel eSIM is data-only — it has no usable number, so it cannot receive the SMS verification codes Alipay, WeChat, DiDi and 12306 send. So the setup that actually works is a combo:
- Home SIM on international roaming → keeps your real number, receives Chinese-app SMS codes.
- Travel eSIM → cheap data that bypasses the firewall.
Whether you need a VPN at all, and why a local Chinese SIM does not get you past the firewall, is laid out in China eSIM vs VPN — read that first if you're still deciding between approaches; this page is the “which one to buy and how to install it” follow-on.
Compare the options (all bypass the firewall)
Four eSIMs that get you past the firewall, side by side. All four are data-only, with no phone number, which is why the home-SIM combo above still matters.
| eSIM | Plan type | Network | Hotspot | Last checked |
|---|---|---|---|---|
| Nomad eSIM | Unlimited (high speed resets daily, then 512kbps) or fixed 1–50 GB | China Unicom, China Telecom | Supported, not guaranteed on every device | Tested Sep 2026 |
| Holafly | Unlimited data per day | China Mobile | Restricted | Tested Apr 2026 |
| Airalo | GB packages (China or Asia regional) | Not confirmed | Allowed | Tested Nov 2025 |
| Trip.com Mainland China 5G eSIM | Per day (0.5–3 GB, or unlimited tiers) or 1–100 GB, for 1–365 days | Not confirmed | Not confirmed | Listing checked Jul 2026 |
Which one fits your trip
- Most trips: Nomad eSIM — start with an unlimited plan if you don't know how much data you'll use (high-speed data resets every day), or a fixed plan if your use is light and predictable. Two networks, hotspot supported.
- You never want to count gigabytes and mostly use one phone: Holafly's unlimited-per-day plans (hotspot is restricted).
- Very light use on a short trip: Airalo's small packages cost the least.
Whichever you choose, land with a plan already installed — a fresh foreign eSIM generally can't be set up once you are in mainland China. Running low is a different matter: Nomad confirmed to us in September 2026 that data can be added to an existing plan from inside China (a new plan can't be bought there); other providers' rules differ. Holafly, Airalo and Nomad eSIM are also compared against home roaming and a local Chinese SIM in China eSIM vs VPN.
Get Nomad eSIM for China
Unlimited from US$12 for 3 days or fixed data from US$4, on China Unicom and China Telecom. Data only — keep your home SIM on roaming.
Frequently asked questions
- Does a China eSIM work with ChatGPT, Google and WhatsApp?
- Google, WhatsApp, Gmail and Instagram do: a roaming travel eSIM routes your data through a foreign carrier instead of inside the Great Firewall, so they work with no VPN. ChatGPT depends on where that traffic comes out. OpenAI's list of supported countries and territories leaves out mainland China, Hong Kong and Macau, and OpenAI says use from outside the list may get an account blocked — so the country your eSIM exits from matters, and any IP-lookup site shows it once you are connected. (A local SIM from a Chinese carrier does not bypass the firewall.)
- How much does a China eSIM cost?
- Travel eSIMs are cheap relative to roaming: expect a few US dollars for a short, light trip and roughly US$10–25 for one to two weeks of normal use. Unlimited-per-day plans cost more than small fixed-data packages, so size the plan to how you actually use data — the "How much data do you need?" table on this page is a starting point.
- Do I still need my home SIM in China?
- Yes — keep it on international roaming. A travel eSIM is data-only and cannot receive the one-time SMS codes Chinese apps (Alipay, WeChat, DiDi, 12306) send. Your home number on roaming receives those codes; the eSIM carries the cheap, firewall-free data. That combo is the setup most visitors want — see our China eSIM vs VPN comparison for the full reasoning.
- How do I install a China eSIM — and when?
- Buy and install BEFORE you fly. If your phone supports eSIM (most iPhone XS-and-later and recent Android), you buy online, receive a QR code by email, and scan it under Settings to add the line. The catch is stricter than most guides say: Apple's own support page states that eSIMs from carriers outside mainland China cannot be installed while you are located in mainland China. That is a restriction tied to where the phone is, not to network access — so airport or hotel Wi-Fi, a friend's hotspot, roaming on your home SIM and a VPN all fail to get around it. Hong Kong and Macau sit outside the restriction, so installing during a layover there does work. Apple documents this for iPhone; Android makers publish nothing comparable, so install before you fly whatever you carry. Then just switch the eSIM on for data when you land — no SIM swap, no store visit, no Chinese ID.
- Can I top up a China eSIM once I am in China?
- With Nomad eSIM, yes: data can be added to a plan you already have, from inside China — Nomad confirmed this to us in September 2026. What you cannot do from inside China is buy a brand-new plan, so land with one installed. Other providers' rules differ, and some fixed-data plans stop working the moment the data runs out; an unlimited-per-day plan sidesteps the question, because its allowance renews every day.
- eSIM or VPN for China — which do I need?
- For most travelers, the eSIM — not a VPN. A roaming travel eSIM already routes around the firewall, so blocked apps work without one. And after the April 2026 crackdown (the '拔线潮' / Great Unplug, when authorities physically cut thousands of domestic relay servers) most consumer VPNs stopped working on the mainland, so a VPN is no longer a dependable plan. The honest comparison is in our China eSIM vs VPN guide.
Related
- China eSIM vs VPN — do you even need a VPN? The ad-free decision guide.
- Why WhatsApp & Google don't work in China — the mechanism behind all this.
- How to book China travel — once you're online, where to book hotels, trains and tickets.
- China pre-trip checklist — everything to set up before you board.