通信
中国で国際eSIMがあってもVPNは必要ですか？
最終更新 2026-05-31
Why an international eSIM usually bypasses the firewall
When you roam on an international eSIM, your phone connects through the provider's home network — often Hong Kong, Singapore, or somewhere else outside the mainland. Because your traffic exits China before reaching the open internet, the Great Firewall's blocks don't apply, and Western apps behave normally.
The exception: local-breakout eSIMs
A few eSIM plans use what's called local breakout, meaning your data exits onto the Chinese internet directly. On those, blocked apps stay blocked. Before buying, check the product description or ask support whether the plan keeps Google and WhatsApp working in China — reputable travel eSIMs state this explicitly.
- Airalo, Holafly, Nomad, and Saily China or Asia-regional plans are widely reported to keep Western apps working.
- Be wary of a plan that only names a local Chinese carrier with no note about the firewall.
Should you still install a VPN?
It's cheap insurance. If your eSIM disappoints, or you switch to a local SIM partway through the trip, a pre-installed VPN is your fallback. Remember it has to be installed and tested at home — you can't reliably download one once you're inside China.
A 60-second check before you fly
- Confirm your eSIM plan explicitly supports Google and WhatsApp in China.
- Install one VPN as a backup and verify it actually connects.
- Download offline Google Maps and an offline translation pack, just in case.
Your next step
Next: decide how you'll stay online
The eSIM / VPN Chooser turns a few questions into a recommended connectivity path, a backup, and first-day tests you can save to your Arrival Plan.
Open the eSIM / VPN Chooser続けて読む
関連する質問
旅行全体を準備しますか？
中国到着プランを作成しましょう。
Start with your first city, then save payment, internet, arrival, and final-check recommendations into one return link.
支払いアプリ、ビザ規則、通信環境は変わります。出発前に公式情報で確認してください。