Quick Answer (30 seconds)
Get an eSIM before you fly. Airalo, Holafly, and Saily all work in China and route through overseas servers — meaning you can access Google, Instagram, and WhatsApp without a VPN. Install before departure, activate on landing.
Key fact: If your phone supports eSIM (iPhone XS and later, most recent Androids), this is the easiest option. No physical SIM, no store visit, no Chinese phone number required.
Full Guide
The moment you land in China, two things happen: your home carrier's roaming kicks in (expensive), and you realize Google, WhatsApp, and Instagram don't work (the Great Firewall). An eSIM solves both problems.
Why eSIM Instead of a Local SIM?
- eSIM — Set up before you fly in 5 minutes, no VPN needed (traffic routes overseas), data only (no phone number)
- Local SIM — Set up after landing, 30-60 min at airport store, VPN needed (local IP, blocked sites), includes a Chinese phone number, requires cash or Alipay
Choose eSIM if: You mainly need data and want to access blocked sites without a VPN.
Choose local SIM if: You need a Chinese phone number for WeChat registration, food delivery accounts, or local services.
Recommended eSIM Providers
1. Saily (Best All-in-One)
- Network: China Unicom, China Mobile
- Data: 1GB to unlimited
- Price: from $4.49 (1GB/7 days) to $26.99 (10GB)
- VPN needed?: No — traffic routes through overseas servers
- Best for: Travelers who want an all-in-one solution with security features
- Note: Saily was rated highly in 2026 China eSIM comparisons
2. Airalo (Best Value per GB)
- Network: China Unicom
- Data: 1GB to 50GB, 3 to 30 days
- Price: $4 (1GB/3 days), $10.50 (3GB/7 days), $24.50 (10GB), $40 (20GB), $49 (50GB/30 days)
- VPN needed?: No — Airalo routes through overseas servers, so Google/WhatsApp/Instagram work natively
- Setup: Buy on airalo.com → install eSIM profile → activate when you land
- Refill: Can top up data in the app
- Best for: Budget-conscious travelers
3. Holafly (Best for Heavy Users)
- Network: China Mobile (CMCC)
- Data: Unlimited data
- Price: from $3.90/day ($27.50 for 7 days)
- VPN needed?: No — Holafly routes internationally
- Best for: Heavy data users who don't want to worry about limits
4. Your Home Carrier's International Roaming
- Most carriers (T-Mobile, Verizon, AT&T, Vodafone, etc.) offer international day passes
- T-Mobile: Free 256kbps throttled data in China (very slow but works, no VPN needed — traffic goes through your home carrier)
- Others: $10-15/day — expensive for long trips
- VPN needed?: Depends on carrier — if they route through your home country, no
How to Install an eSIM
- Check compatibility: Your phone must support eSIM. iPhone XS and later (all models), Samsung Galaxy S20+, Google Pixel 3+, most recent flagships. Check your phone settings → Cellular → "Add eSIM" or "Add Cellular Plan."
- Buy before you fly: Go to the provider's website, select your plan, pay with credit card.
- Install the eSIM profile: You'll receive a QR code by email. Open phone settings → Cellular → Add Cellular Plan → scan the QR code. Do this at home — the eSIM activates when you connect to a Chinese network.
- Turn off the eSIM until you land: In phone settings, toggle the eSIM line off. You don't want it using data while you're still in your home country.
- On arrival: Turn on the eSIM line. It connects to a Chinese carrier automatically. Data starts flowing immediately.
- Turn off your primary SIM's data: To avoid roaming charges, turn off data roaming on your home carrier line, and set the eSIM as your data line.
The VPN Question
With a travel eSIM (Airalo/Holafly/Saily): You generally don't need a VPN. Your traffic routes through the eSIM provider's overseas servers, bypassing the Great Firewall. Google, YouTube, WhatsApp, Instagram, and Gmail work normally.
Caveat: This isn't 100% reliable. The routing can change, and some eSIM providers may route through Chinese servers for cost reasons. If you absolutely need VPN access (e.g., for work), install a VPN app before you land — you can't download VPN apps from the Chinese App Store.
Best VPNs for China (install before arrival):
- Astrill (most reliable in China, ~$30/month)
- ExpressVPN (good, but hit-or-miss in 2025-2026)
- Let'sVPN (ceased mainland China operations in April 2026, no longer available)
How Much Data Do You Need?
- Maps/navigation — 5-10 MB/hour
- Browsing/social media — 20-50 MB/hour
- WhatsApp calls — 30 MB/hour
- Video streaming — 300-700 MB/hour
- Video calls (Zoom/FaceTime) — 200-400 MB/hour
For a 7-day trip with normal use (navigation, social media, some photos), 3-5GB is enough. If you'll stream video or make lots of video calls, get 10-20GB. For a full month, consider the 50GB plan from Airalo ($49).
Troubleshooting
Problem 1: eSIM Won't Activate After Landing
Why: The eSIM profile didn't install correctly, or your phone doesn't support eSIM for the Chinese carrier band.
Fix: Go to phone Settings → Cellular → make sure the eSIM line is toggled ON and "Data Roaming" is enabled for that line. If it still doesn't work, toggle Airplane Mode on and off. If the eSIM still won't connect, reinstall the eSIM profile by scanning the QR code again.
Problem 2: Google/WhatsApp Still Blocked with eSIM
Why: The eSIM provider is routing some traffic through Chinese servers, or their routing changed.
Fix: This happens occasionally. If Google/WhatsApp don't work despite having an eSIM, your traffic is going through a Chinese IP. Use a VPN (installed before arrival) as a backup. Check with the eSIM provider's support — they can confirm whether they route through China or overseas.
Problem 3: Data Runs Out Mid-Trip
Why: You used more data than expected (video streaming, background app updates).
Fix: Airalo lets you top up data in the app (buy additional GB). Holafly's unlimited plan shouldn't have this issue. Free public Wi-Fi is available in most Chinese hotels, cafes, and shopping malls — but you'll often need a Chinese phone number to log in to public Wi-Fi networks.
Last verified: August 2026 · Sources: Airalo official website (airalo.com), Holafly official website (holafly.com), Saily official website (saily.com), andreondigital.com (May 2026 comparison), gizmodo.com (2026 comparison) · eSIM plans and pricing may change — check provider websites before purchasing.
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