Faut-il un VPN avec une eSIM internationale en Chine ?

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.

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.

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.