Your US carrier plan is not a viable option in China. AT&T, Verizon, and T-Mobile charge $10–15 per day for China roaming, often with degraded speeds. The alternatives are dramatically better and cheaper. Here is every option explained clearly, so you can pick and set up the right one before you board.
Your SIM and your VPN work together — set both up before departure
Any SIM or eSIM below gives you a data connection in China. But Google, Gmail, YouTube, WhatsApp, and Instagram are blocked at the network level. You need a VPN installed before you leave home to unblock them. See our full guide: → Best VPN for China 2026
All Five Options at a Glance
| Option | Setup | Data | Cost | Speed | Best For |
|---|---|---|---|---|---|
| Airalo eSIM | Before departure | 1 – 20 GB | $5 – $45 | 4G LTE | Most tourists · 1–14 days |
| Holafly eSIM | Before departure | Unlimited* | $28 – $55 | 4G LTE | Heavy data users · video calls |
| China Mobile SIM | Airport store | 50 GB / 30 days | $18 – $25 | 4G / 5G | Stays over 2 weeks |
| China Unicom SIM | Airport store | 30–100 GB | $15 – $30 | 5G (cities) | Best speeds in tier-1 cities |
| Pocket WiFi | Airport rental | Shared / unlimited | $7 – $12/day | 4G | Groups & families |
| US Carrier Roaming | No setup | Limited / slow | $10 – $15/day | Often throttled | Not recommended |
Airalo — Best Flexible eSIM
Airalo is the world's largest eSIM marketplace, and its China plans are the easiest first-choice for most tourists. You buy a data plan online before departure, scan a QR code to install it on your phone, and have working data the moment your plane lands in Beijing, Shanghai, or anywhere else in China. No store visit, no passport needed, no language barrier.
China eSIM — Flexible
- Purchase & install before departure
- Plans: 1 GB / 3 GB / 5 GB / 10 GB / 20 GB
- Validity: 7 – 180 days depending on plan
- Keep US number active simultaneously
- VPN compatible — no restrictions
- Top-up mid-trip if needed
- Requires eSIM-capable unlocked phone
Airalo Plans for China — Pricing
| Plan Size | Validity | Price (USD) | Best For |
|---|---|---|---|
| 1 GB | 7 days | ~$5 | Short trips, light use, backup only |
| 3 GB | 30 days | ~$9 | 4–5 day trip, moderate use |
| 5 GB | 30 days | ~$12 | Best value — 7-day trip, normal use |
| 10 GB | 30 days | ~$22 | 10-day trip or heavy data user |
| 20 GB | 180 days | ~$45 | Long stays, frequent travelers |
Holafly — Best Unlimited eSIM
If you don't want to count gigabytes, Holafly's unlimited China eSIM removes all data anxiety. It's priced by days rather than data — a 7-day unlimited plan runs ~$28, a 15-day runs ~$38. "Unlimited" in practice means full-speed 4G LTE up to around 3–5 GB/day, then reduced speed — which for typical tourist usage (maps, translation, messaging, light video via VPN) is never a real constraint.
China eSIM — Unlimited
- Truly unlimited — no data counting
- Plans: 5 / 7 / 10 / 15 / 30 days
- Purchase & install before departure
- VPN compatible
- 24/7 customer support
- Speeds may reduce after ~5 GB/day
- Higher cost for light users vs Airalo
China Mobile & China Unicom Tourist SIM
For trips over 2 weeks, or for travelers who want a local Chinese phone number (useful for WeChat verification and some hotel check-ins), a local SIM card from China Mobile or China Unicom offers better value than any eSIM plan. Both are available at international airport arrivals halls — look for the carrier counters before you exit customs.
China Mobile
China Mobile is the largest carrier in the world by subscribers — excellent coverage including rural areas and Silk Road cities. Tourist SIM cards come with 50 GB of data valid for 30 days for approximately $18–22 USD. Requires your passport. Airport staff speak basic English for tourist SIM purchases.
China Unicom
China Unicom has the best 5G coverage in first-tier cities (Beijing, Shanghai, Guangzhou, Shenzhen) and competitive pricing. Tourist plans range from 30 GB to 100 GB monthly. Slightly more expensive than China Mobile but noticeably faster in urban cores where 5G is live.
China Telecom
China Telecom is a distant third for tourist SIMs — viable but fewer airport counters and less tourist-facing support. Stick with Mobile or Unicom unless neither is available.
Pocket WiFi Rental
Pocket WiFi (portable router) devices let multiple phones, tablets, and laptops share one data connection simultaneously. Available at international airports for rental, typically $7–12/day with unlimited shared data. You return the device at the airport on departure (or mail it back).
When Pocket WiFi Makes Sense
- Families of 4+ where everyone needs connectivity — split one daily rental cost between the group
- Travelers with non-eSIM phones who can't use an eSIM and want something easier than a local SIM
- Laptop-heavy travelers who need reliable data for a device beyond their phone
When Pocket WiFi Doesn't Make Sense
- Solo travelers or couples — an eSIM is simpler, cheaper, and one less device to charge
- Anyone doing active sightseeing — lugging a second device and cable is tedious over a full day
- Overnight trains or long journeys — the device needs constant power; eSIM is always-on
Step-by-Step eSIM Setup (iPhone & Android)
Do this at home, not at the airport. The setup is simple, but you want stable WiFi and no time pressure. Fifteen minutes before your departure date is fine. The night before is fine. The morning you fly is cutting it close.
Step 1 — Check eSIM Compatibility
Compatible iPhones
- iPhone XS, XS Max, XR and newer (2018+)
- iPhone SE (2nd generation, 2020) and newer
- iPhone 14 and 15 models: eSIM only in US — physical SIM tray removed
- Confirm: Settings → Cellular → Add eSIM — if you see this, you're compatible
Compatible Android Phones
- Samsung Galaxy S20, S21, S22, S23, S24 series
- Google Pixel 3a and all newer Pixel models
- OnePlus 9 series and newer
- Most flagship Android phones from 2020 onward
- Confirm: Settings → Connections → SIM Manager → Add eSIM
Confirm Your Phone Is Carrier-Unlocked
Your phone must be SIM-unlocked to use a foreign eSIM. Phones purchased directly from Apple or Google are usually unlocked. Carrier-purchased phones may be locked for 12–24 months. Check: Settings → General → About → Carrier Lock (iOS). If it says "No SIM restrictions," you're unlocked. Android: call your carrier to confirm.
Purchase Your eSIM Plan
Visit airalo.com or holafly.com on your laptop or phone. Search "China." Select your plan. Complete purchase — you'll receive an email with a QR code within 2–5 minutes. Save this QR code screenshot; you'll scan it in the next step.
Install the eSIM Profile
iPhone: Settings → Cellular → Add eSIM → Use QR Code → scan the QR code from your email. Tap Continue. Label it "China Data."
Android (Samsung): Settings → Connections → SIM Manager → Add Mobile Plan → Scan QR Code. Follow the prompts.
The installation takes 1–3 minutes. Your phone may briefly show "Installing SIM" — wait for the confirmation screen.
Configure Data Lines
After installation, go to your cellular settings. Set the China eSIM as your data line. Keep your US SIM as your primary line for calls and texts. Turn off data roaming on your US SIM — this prevents accidental carrier charges. You'll now see both lines in your status bar.
Activate on Landing in China
When your plane lands: enable the China eSIM data line (it may already be active). Enable "Data Roaming" on the eSIM line specifically. Wait 30–60 seconds for the network to register. Open your pre-installed VPN and connect. Test by loading a Google search — you're live. Welcome to China.
VPN Compatibility — The Critical Link
Every SIM card and eSIM option in this guide provides an unrestricted data connection. VPNs operate at the application layer, not the cellular layer. This means your VPN works identically regardless of whether you're using Airalo, Holafly, China Mobile, or any other option. The carrier doesn't restrict VPN traffic.
How VPN + eSIM Work Together
- Your eSIM provides a cellular data connection — think of it as the "pipe"
- China's Great Firewall blocks certain content at the DNS and IP level — Google, YouTube, Instagram, WhatsApp, etc.
- Your VPN encrypts your traffic and routes it through a server outside China — bypassing the firewall
- Result: you have full access to all your normal apps and services, on your China data connection
| VPN | China Reliability | Speed Impact | Cost/Month | Install Before Trip? |
|---|---|---|---|---|
| ExpressVPN | Excellent | Minimal | ~$8 | Yes — essential |
| NordVPN | Very Good | Minimal | ~$5 | Yes — essential |
| Astrill | Excellent | Low | ~$15 | Yes — essential |
| Surfshark | Good | Low | ~$3 | Yes — essential |
| Free VPNs | Unreliable | High | $0 | Don't rely on these |
WhatsApp is Blocked — Use WeChat Instead
WhatsApp does not work in China without a VPN. Neither does Telegram, Instagram DM, or Facebook Messenger. This surprises almost every first-time visitor. With your VPN active, all of these work normally — but VPNs can sometimes disconnect or slow down, especially in sensitive political periods.
Download WeChat Before You Leave
WeChat (微信, Wēixìn) is the universal communication platform in China — 1.4 billion users, used for everything from messaging to payments to booking. Your hotel, your tour guide, your driver, your restaurant reservation — all will go through WeChat. It works in China without a VPN.
① Download WeChat before departure — account creation requires phone verification that's easier done at home
② Have your family & friends download WeChat too — they can reach you via WeChat from anywhere in the world, and it works inside China without VPN
③ Add your ChinaWithEase guide on WeChat — they'll send you pre-trip information, day-of logistics, and be your in-country contact
What Works Without a VPN in China
- WeChat — messaging, voice, video calls, payments, everything
- Alipay — payments (see our Alipay for foreigners guide)
- Didi — rideshare app (Chinese Uber)
- Baidu Maps — navigation, English mode available
- Baidu Translate — camera translation, voice translation
- Apple iMessage & FaceTime — sometimes work on cellular data
- Most airline, hotel, and booking apps
How Much Data Do You Actually Need?
First-time visitors almost always either over-buy (worrying about running out) or under-buy (not accounting for VPN overhead and map usage). This breakdown is based on real usage data from our tour groups.
Daily Data Usage by Activity
Recommended Data by Trip Profile
| Trip Profile | Days | Recommended Plan | Why |
|---|---|---|---|
| Light user — maps + messaging only | 7 days | 5 GB Airalo | ~700 MB/day — plenty of headroom |
| Normal tourist — maps, social, photos | 7 days | 10 GB Airalo | ~1.2 GB/day with VPN social media |
| Heavy user — frequent video calls | 7 days | Holafly unlimited | Removes all anxiety, worth the extra $15 |
| Any profile | 14+ days | China Mobile 50 GB | Best value; 50 GB for 30 days is $18–22 |
| Family of 4, shared | 10 days | Pocket WiFi | One shared connection, all devices covered |
Troubleshooting Common Issues
| Problem | Likely Cause | Fix |
|---|---|---|
| "eSIM not compatible" error | Phone is carrier-locked | Contact your carrier to unlock. May take 1–3 business days — do this well before travel. |
| eSIM installs but no signal | Data roaming not enabled on eSIM line | Settings → Cellular → [China eSIM line] → Data Roaming → ON. |
| eSIM shows signal but no internet | APN settings incorrect (some carriers) | Check Airalo/Holafly support page for China APN settings. Add manually if needed. |
| VPN keeps disconnecting | Normal during network handoffs | Enable "Kill Switch" in VPN settings. Use ExpressVPN Lightway or NordVPN NordLynx protocol — fastest reconnect. |
| Google Maps won't load | VPN not connected | Check VPN status. If disconnected, reconnect. As backup, switch to Baidu Maps (works without VPN, English mode available). |
| Local SIM not activating | Passport details not processed | Wait 30–60 minutes after airport purchase — carrier needs to verify identity registration. If still not working after 1 hour, return to the counter. |
| WeChat voice/video not working | Network quality too low | WeChat audio/video degrades on poor signal. Switch to 4G/5G area. In emergencies, use WiFi calling via WhatsApp (requires VPN). |