SIM cards in China: airport kiosks, city shops, and when an eSIM is smarter

Decide between two things before you land: a local Chinese SIM (a physical card from one of the three state carriers, with a +86 phone number and cheap local data) or a travel eSIM (a data-only plan you install at home, which routes your traffic outside the mainland so the open internet works normally). Our verdict for most Xi'an trips of a week or less: the eSIM wins — it is less hassle, and the firewall workaround alone is worth it. The local SIM earns its place on longer stays, or when you specifically need a Chinese phone number.

This page is about the local SIM: the legal hoop, where to buy it in Xi'an, what it costs, and the honest list of what a +86 number is actually good for. The full eSIM vs. VPN vs. roaming comparison — including why the eSIM must be installed before departure — lives in the internet, eSIM & VPN guide.

China registers every mobile number to a real identity — by law, not by carrier policy. As a foreigner that means one thing: you buy a SIM in person, with your physical passport, and the shop photographs it (and usually you) at the counter. The whole process takes ten to fifteen minutes at an official kiosk or carrier shop.

Two practical consequences:

• Never buy a pre-registered SIM from a street vendor or a random online seller. A card registered to a stranger's ID can be cut off without warning, and the resale itself is illegal. The savings are imaginary.
• Your passport is the purchase. No passport, no SIM — a photocopy or a phone photo of it won't do. If your passport is at the hotel safe, the SIM errand waits.

Registration also means the number is tied to you for the life of the card. Tourist packages are usually pre-set to expire after 15 or 30 days, which is exactly what a visitor wants — nothing to cancel, nothing that follows you home.

The easiest place to buy is the arrivals hall of Xi'an Xianyang International Airport (XIY): the three carriers — China Mobile (中国移动), China Unicom (中国联通) and China Telecom (中国电信) — all maintain kiosks or counters there, staffed by people who process foreign passports daily and usually manage basic English. You land, you hand over your passport, you pick a tourist package from a printed menu, staff install and test the card in your phone, and you walk out connected. Fifteen minutes, door to data.

The trade-off is price and choice: airport menus skew toward tourist bundles and are a notch pricier than city-shop promotions. We are talking the difference of a coffee or two, not real money — for a jet-lagged arrival, pay it. The airport play also stacks neatly with the rest of arrival day: sort the SIM while you wait for a checked bag, then follow the airport transfer guide into town.

Every carrier runs branded shops all over Xi'an — you will pass China Mobile and Unicom storefronts constantly around the Bell Tower and along the main shopping streets. Prices and data allowances are generally a bit better than the airport menu, and monthly promotions can undercut it by a wide margin.

The catch is friction. Not every neighborhood branch is practiced at foreign passports, English is rare, and the errand can eat an hour of your trip if you land in the wrong queue. Our advice: only bother with a city shop if the airport didn't work out (late arrival, closed counters) or if you're staying a month or more and the better package actually matters. If you do go, bring your passport, have your hotel's address in Chinese on your phone, and pick the biggest, most official-looking branch — flagship stores handle foreigners faster than franchise counters. The hotel can point you to one; that's the kind of errand the front desk enjoys being right about.

Prices shift with promotions, so take these as honest ranges rather than quotes, and check the board on arrival:

• Airport tourist packages: roughly ¥100–200 for plans in the 15–30 GB range valid for 15–30 days, usually with some local call minutes thrown in.
• City-shop and promotional packages: basic plans can start around ¥50–100 for smaller data allowances; heavier packages scale up from there.

Data-only visitors consistently overbuy. Between hotel Wi-Fi and the reality that maps and messaging sip rather than gulp, 15–20 GB covers a normal two-week trip comfortably. Paying by QR code with your linked foreign card normally works at these counters — set that up before you fly, per the payments guide — and cash works everywhere as the fallback.

Here is the honest, short list of what a Chinese number buys you in 2026:

• Some app verifications. The core tourist apps — Alipay, WeChat, DiDi, 12306, Trip.com — all register on foreign numbers, per our essential apps guide. The stragglers that still demand +86 are conveniences: certain food-delivery apps, some bike-share tiers, the odd Wi-Fi portal or local ticketing mini program.
• DiDi drivers calling you. Drivers can and do call through the app to any number, but some still dial directly, and a local number removes all doubt when a pickup goes sideways.
• Humans reaching you. Hotels confirming a late arrival, a tour operator rearranging a pickup, a restaurant taking a booking — local contacts are simply happier calling a local number, and some smaller guesthouses will ask for one at booking.

Notice what is not on the list: payments, trains, taxis, maps and attraction tickets all work fine without one. If your trip is a standard five-day Xi'an highlights run, a +86 number is a nice-to-have. If you're staying weeks, traveling independently beyond the tourist circuit, or working remotely, it graduates to genuinely useful.

A travel eSIM is data-only — no Chinese number — but it has one decisive superpower: it routes your traffic outside the mainland, so Google, Gmail, WhatsApp, Instagram and your home news sites work exactly as they do at home, with no VPN babysitting. A local SIM gives you fast local data behind the firewall; every blocked service stays blocked unless you also run a VPN on top.

So the decision tree is short:

• Trip of a few days to two weeks, no need for a local number: travel eSIM, installed and tested before departure (installation needs the open internet — doing it after landing is painful). Done.
• Longer stay, or you need +86 for calls and verifications: local SIM at the airport, plus a VPN installed before departure for the blocked services.
• Want both: read the next section.

Plans, providers and the firewall details are all in the internet, eSIM & VPN guide.

Most phones sold in the last few years are dual-SIM capable — either two physical slots or one physical slot plus eSIM. That unlocks the best-of-both setup: keep your home SIM active for bank codes and iMessage/WhatsApp identity, and add a Chinese SIM or travel eSIM purely for data. In settings, point mobile data at the new line and leave calls and texts on the home line. Roaming charges stay at zero because the home SIM never touches data.

Two safety notes that save real grief:

• Don't lose the home SIM. If you swap in a physical Chinese card, your tiny home nano-SIM goes somewhere memorable — taped inside your passport cover is the classic. Losing it means a tedious replacement errand at home. If your phone supports it, keeping the home line on eSIM and the Chinese card in the physical slot avoids the problem entirely.
• Restart and test at the counter. Chinese SIMs sometimes need a reboot and a manual APN push before data flows. Do not leave the kiosk until you've watched a web page load on cellular data with Wi-Fi turned off. Testing there turns a potential day-one mystery into a thirty-second fix by the person who sold it to you.