A travel eSIM for Chinese Mainland. Pick how many days you need and how much data, and the QR code arrives by email within minutes of payment — usually long before you leave for the airport. Duration: 1 to 30 days Data: 2GB to 50GB, plus unlimited plans Delivery: QR code by email, within minutes of payment Network: connects to the major local networks in Chinese Mainland Install it over Wi-Fi before you travel, but leave the line switched off. The validity period starts when the eSIM first connects to a network at your destination, not when you install it. Your existing SIM stays where it is, so calls and texts keep working on your usual number. Your phone needs to support eSIM and be carrier-unlocked — dial *#06# and an EID number means it does.