What is an eSIM?
An eSIM (embedded SIM) is a digital SIM built into your phone. Instead of swapping a physical plastic card, you install a data plan by scanning a QR code or tapping a link. For visitors to China, this matters more than in most destinations — buying a local SIM in person can mean extra paperwork, and your data plan choice affects which apps and sites you can reach.
Why an eSIM beats roaming and local SIM cards
Roaming through your home carrier is usually the most expensive option — daily fees or inflated per-MB rates that add up fast over a multi-day trip.
Local Chinese SIM cards require finding a shop after you land, ID registration, and juggling a second physical card while your home number sits idle.
An eSIM from Chinaesim.io skips both problems: you get a QR code by email instantly after checkout, install it in a couple of minutes, and keep your regular SIM active for calls and texts. Because the data routes through an international network rather than a domestic Chinese carrier, many travellers find they can keep using apps like Google Maps, Gmail, WhatsApp, and Instagram that are otherwise blocked on local networks — worth checking before you rely on it for anything essential.
Which devices support eSIM?
Most phones released from 2018 onward support eSIM, including iPhone XS and later, most Google Pixel models from the Pixel 3 onward, and many Samsung Galaxy S/Note/Fold models. Check Settings for "Add eSIM" or "Add Cellular Plan" on iPhone, or "Add mobile plan" under Network & Internet on Android — if the option exists, your device is compatible. Note: iPhones sold in mainland China are typically dual-physical-SIM and don't support eSIM, so this matters more if you bought your phone locally versus abroad.
How to install your China eSIM
- Choose a data plan on Chinaesim.io and check out.
- Check your email for the QR code — delivery is instant.
- On your phone, go to Settings and choose to add a new eSIM/cellular plan.
- Scan the QR code (or tap the install link if you're checking your email on the same device) — ideally before you land, since some apps needed to receive the QR code may be harder to reach once you're on a local network.
- Turn on data roaming for the new eSIM line and set it as your data line.
Choosing the right plan
Plans are priced by data allowance and validity period. For a short trip, a smaller data bundle valid for a week is usually enough; for longer stays, look at larger allowances or longer validity windows. For a broader rundown of what you'll need to stay online, see our Complete Internet & Mobile Data Guide for China.
eSIM vs the alternatives, in detail
If you want a full side-by-side comparison of cost and convenience, see China eSIM vs Local SIM vs Roaming.
Planning your trip
Once you're set up with data, check our 10 Essential Tips for Visiting China for a practical checklist beyond connectivity.
The bottom line
An eSIM is the simplest way to land in China with working, dependable data: no queues, no physical card, no roaming surprises. Set up your plan before you fly so you have signal and access from the moment you land.