Get online before you land.

A travel eSIM is a digital SIM card that installs onto an eSIM-capable phone by scanning a QR code or activating within an app. It connects to a Chinese local carrier's network (such as China Mobile or China Unicom), but the data traffic is usually routed via overseas servers — which is why it can access many services blocked on mainland China.

A travel eSIM provides data only and no phone number, so it cannot make traditional voice calls or receive SMS. If you only need to check maps, use translation, send messages, navigate and hail rides, an eSIM is completely sufficient.

Most iPhones released after 2018 and some Android phones support eSIM. Before departure, confirm your phone is unlocked (not carrier-locked) and supports eSIM.

Below are several travel eSIM providers that work relatively reliably in China. Choose based on price, data plans and user reviews:

• Airalo: One of the eSIM platforms with the widest coverage. China plans range from 1GB to 20GB, with transparent pricing and in-app top-ups at any time. Good for first-time eSIM users.
• Trip.com eSIM: A Trip.com product with a friendly Chinese interface and easy integration with Trip.com flight and hotel bookings. Offers various day/data combinations.
• Nomad: Offers mainland China and Asia-Pacific plans with flexible data options and hotspot sharing. Good for scenarios where multiple devices need internet.
• Holafly: Focuses on unlimited data plans, good for heavy data users or travelers unsure of their data needs. Priced per day, relatively more expensive but no worry about running out of data.

It's recommended to complete the purchase and installation 24–48 hours before departure, and to activate and test it before boarding, so it works the moment you land.

Data needs vary widely by usage habits. Below are reference ranges for common trips:

• 3–5 day short city break: 1–5GB. Mainly for map navigation, WeChat messages, translation and light browsing.
• 7-day trip: 3–10GB. Adds photo sharing, video calls and social media use.
• 14-day trip: 5–20GB. Includes more video content, navigation and everyday use.
• Remote work or heavy use: Choose an unlimited data plan, or a 20GB+ plan with a top-up backup.

Note: Video streaming like YouTube and Netflix burns through data quickly — 1 hour of HD video uses about 1–3GB. Downloading Google Maps offline can save a lot of data.

This is the question travelers care about most. The answer: in most cases yes, but it is not guaranteed.

Travel eSIM data traffic is usually routed via overseas servers (rather than going directly over the mainland China network), so Google Search, Gmail, WhatsApp, Instagram, Facebook and other apps typically work normally on eSIM data without an extra VPN.

However, this characteristic is not an official guarantee — it depends on the eSIM provider's routing strategy and changes in China's network controls. During certain periods or with certain providers, there may be intermittent instability. So even with an eSIM, it's strongly recommended to install a VPN before departure as a backup.

When you switch from eSIM data to hotel Wi-Fi or public Wi-Fi, the traffic will go over a mainland China route, and the above apps will immediately become inaccessible — that's when a VPN becomes essential.

The biggest limitation of a travel eSIM is that it doesn't provide a Chinese phone number, meaning you cannot receive SMS verification codes. In China, many services and apps rely on SMS verification:

• Some hotels require a Chinese phone number to receive a verification code at check-in.
• Registering local payment tools like Alipay and WeChat Pay requires a phone number.
• Using local apps like DiDi ride-hailing, Meituan food delivery and bike sharing requires a phone number to register.
• Some Wi-Fi login pages require phone-number verification.

If you only need basic data, maps, translation and your existing apps, an eSIM is enough. But if you plan to use Chinese local apps in depth, consider pairing it with a local SIM card or solving the verification-code problem in advance by other means.

A travel eSIM can usually access Google, WhatsApp and other apps over data. But when you connect to hotel Wi-Fi, cafe Wi-Fi or airport Wi-Fi, the traffic runs over a mainland China route, under firewall control.

On hotel Wi-Fi, the following apps cannot be used directly:

• Google Search, Google Maps (some features)
• Gmail and the full Google suite (Drive, Calendar, etc.)
• WhatsApp, Telegram
• Instagram, Facebook, X (Twitter)
• YouTube (slow and data-heavy even on eSIM)
• Some foreign news media websites

A VPN routes traffic through an encrypted tunnel to an overseas server, bypassing the firewall and restoring these apps to normal use.

VPN performance in mainland China can change without notice. A provider that works well today may become slow, unstable or temporarily unavailable during your trip.

If access to specific overseas services is essential, install and test a primary option and at least one backup before departure. Check recent availability reports again shortly before your trip rather than relying on an old recommendation.

When comparing options, prioritize recent mainland China performance, connection speed, multi-device support and accessible customer service.

This point is critical: downloading and installing a VPN inside China is very unreliable. The China region of the App Store does not offer mainstream VPN apps, the Google Play Store is inaccessible in China, and VPN provider websites may also be blocked.

The right approach:

• Before departure, download and install at least two VPN apps on your home country's network.
• Complete registration, login and subscription (free VPNs are usually unstable in China; a paid service is recommended).
• Test each VPN's connection and get familiar with switching servers.
• Before boarding, confirm the VPN apps are installed and open normally.
• As soon as you enter China, test whether the VPN works; if there are issues, try updating or switching while you're still at the airport (overseas network).

It's recommended to install a VPN on both your phone and laptop to cover different device scenarios.

• You don't need to keep the VPN on all the time. When using eSIM data, you usually don't need a VPN; turn it on only when switching to hotel Wi-Fi.
• VPN connection speeds may be slower — enough for browsing and messaging, but video calls and streaming may stutter.
• A VPN may disconnect intermittently; when it does, switching server nodes usually restores it.
• While using a VPN, Chinese local apps (such as Amap and Alipay) still work, but loading speed may be slightly affected.
• Some hotel Wi-Fi may block VPN protocols; if you encounter this, try switching networks or using eSIM data.
• Don't openly discuss or display VPN use in public — keep a low profile.

The following scenarios usually require a Chinese phone number:

• Using DiDi ride-hailing: China's main ride-hailing platform; registration requires a Chinese phone number.
• Food delivery platforms: Meituan, Ele.me and other delivery services require a phone number to register.
• Bike sharing: Scanning to unlock a bike requires a phone number to register.
• SMS verification codes: Registering and logging into apps like Alipay and WeChat Pay requires receiving codes.
• Hotel check-in: Some hotels require a Chinese phone number to receive a check-in verification code.
• Local service registration: Many local apps and websites require real-name registration with a phone number.

If you're only on a short trip and don't use these local services, an eSIM is enough. But if you plan to stay more than 2 weeks or need to use local apps in depth, a local SIM card makes everything much smoother.

You can buy a local SIM card from all three major Chinese carriers:

• China Unicom: Good signal in urban areas, flexible plans, and commonly used by foreign travelers. Has travel plans for short-term visitors.
• China Mobile: The widest coverage, with the best signal in remote areas and small cities. The largest user base.
• China Telecom: Stable network, faster in some areas. A wider range of plans.

Purchase process:

• Go to a carrier store (at airports and in the city), bringing your original passport.
• Complete real-name registration on the spot, including a face scan for verification.
• Choose a plan and top up; usually activated on the spot and ready to use.
• Some airports have SIM vending machines, but they have limited features and may not support passport verification, so a staffed carrier store is recommended.

Cost reference: Basic plans are about RMB 30–100/month, including data and calls. Short-term travelers can choose a prepaid plan.

China has fully implemented a real-name system for phone numbers since 2013; all phone numbers must be bound to a real identity. Foreign travelers buying a SIM card must register with a passport and complete a face scan for verification at the time of purchase.

This means:

• You cannot buy directly through online channels (identity must be verified at a physical carrier store).
• The SIM card is bound to your passport; if you no longer use it after leaving, it's recommended to cancel it to avoid leftover personal data.
• One passport usually allows a certain number of phone numbers (specific limits vary by carrier).

If you use a Chinese number on an eSIM or local SIM to register Alipay, WeChat and other apps, those accounts can still be used after you leave, which is convenient for your next trip.