Check your exact phone model
Compatibility can vary by model and purchase region. Check the manufacturer’s settings and support information, and confirm that your phone is carrier-unlocked before buying.
Compare what is actually included
A data-only travel plan may not include a Chinese phone number, calls or SMS. Think about whether you need booking verification messages, a hotspot for a laptop or only maps and messaging.
Read the activation terms
Some plans start when installed; others begin when they connect to a supported network. Save the installation instructions and keep an internet connection available during setup.
Ask about network access
App and website access can vary with the plan’s routing and network. Ask the provider about the services you need and its fair-use policy. Avoid promises that any plan guarantees every app will work.