核心观点
For most **3–14 day** trips, a **China-capable eSIM** (installed on home Wi‑Fi before the flight) is the best balance of speed and setup. Use **home roaming** only if your plan is cheap and fast. Choose an **airport/local SIM** if you need a **+86 number** for SMS-heavy verifications. Data must work **before** you debug Alipay at the curb.
正文
Compare Your Options
| Option | Best for | Tradeoff |
|---|---|---|
| Tourist eSIM | Fast setup, short trips | Usually data-only (no +86 SMS) |
| Home roaming | Zero install | Often expensive/slow; apps still need local maps |
| Airport SIM | Need Chinese number | Queues, passport copy, Mandarin help |
| Wi‑Fi only | Emergency | Unstable for payments and Didi |
Deep dive: China eSIM for travelers.
Connectivity Hub — What To Read First
| If you are asking… | Open this |
|---|---|
| Do I need a +86 number? | Phone question |
| Which eSIM / roaming / local SIM? | eSIM essential — decision card |
| Which apps need data? | Apps question |
| Pay failed after landing | Payment failure question (fix data first) |
| +44 / eSIM OTP mistake | Community thread |
This guide is the connectivity execution manual—compare options, install, arrival test.
适合谁
Travelers choosing connectivity for maps, ride-hail, translation, and mobile payment.
下一步
Option A — Tourist eSIM (recommended for 3–14 days)
- Confirm phone eSIM compatible (iPhone XS+, many Android flagships).
- Buy plan labeled mainland China from a reputable provider (eSIM essential).
- On home Wi‑Fi: Settings → Cellular → Add eSIM → scan QR or enter code.
- Save QR PDF to Files/Photos offline.
- On landing: enable China line for cellular data only; keep home SIM for SMS/voice if needed.
- Test: open Amap, refresh Alipay login, load Didi map pin.
Option B — Home carrier roaming
- Call carrier before trip—ask China daily pass price and speed cap.
- Enable roaming on home line; disable if bill explodes after day 1 test.
- Same app tests as eSIM—roaming does not fix Google Maps limitations.
Option C — Airport / store SIM (+86 number)
- At arrival: China Unicom / Mobile / Telecom counter with passport.
- Ask for tourist data SIM (may include short-term +86 number).
- Staff may install SIM—verify APN if data dead after restart.
- Useful when you need local SMS for rare app verifications (phone number question).
First hour in China (all options)
- Exit immigration → enable data line → disable home data roaming if using eSIM.
- Open Alipay + WeChat on cellular (not captive portal Wi‑Fi only).
- Download offline map pack for hotel district in Amap.
- If nothing loads: toggle airplane mode 10s, re-select SIM for data.
怎么做
Confirm eSIM compatibility
Buy mainland China data plan
Install profile on home Wi‑Fi
Enable data line after landing
Test maps and wallets on cellular
常见坑
No plan on arrival
Regional eSIM without China
Disabled home SMS
Wi‑Fi-only payment debugging
可能变化的部分
Coverage, SMS needs, and speed vary by provider, phone, and city.
备选方案
Official airport SIM counters (China Unicom/Mobile/Telecom), pocket Wi‑Fi rental, or hotel wired Wi‑Fi for one night while you fix the profile.
常见问题
Is roaming or eSIM better?
For 3–14 day trips, a mainland-China eSIM is often simplest; roaming works if your plan is cheap.
Will eSIM give me a Chinese phone number?
Typically no—keep home SMS for OTP if needed.