Actual steps may vary depending on your OS version and device model.

[Installing eSIM]
*One QR code can only be used on one mobile device. Once installed, it will be linked to that device and cannot be transferred to another.

Scan QR code/Manually enter eSIM info to install:
1. Open the QR code attachment in your Trip.com app booking and print it in advance or save it to another electronic device.
2. Open "Cellular (iOS)" or "SIM Card Manager (Android)" in your settings.
3. With your phone connected to the internet, tap "Add Cellular Plan (iOS)" or "Add SIM Card (Android)" and scan the QR code to install.
4. If scanning fails, manually enter the "SM-DP+ Address and Activation Code" from your booking voucher to install.
5. If steps 3 or 4 fail, your phone may be locked by your country/region of residence carrier (unable to use other carrier network bands). Contact your carrier to unlock before using eSIM.

[Using eSIM]
1. Turn off your primary SIM and enable the eSIM network switch.
2. Enable "Cellular (iOS)" or "SIM Card (Android)".
3. Turn on "Data roaming".
4. If you still cannot connect after these settings, configure APN and restart (see details below).

[About access point name (APN)]
1. Setup steps:
iOS: Settings - Cellular - Cellular Plan (select eSIM) - Cellular Data Network - Enter APN
Android: Settings - Connections - Mobile Networks - Select eSIM - Access Point Names (APN) - Create new APN or Edit APN
2. Enter APN
APN: cmhk
3. Restart your phone.

[Checking eSIM usage]
In the Trip.com PDF, tap the data usage query link for one-click access.

[Customer support]
If you encounter issues during use, please do not delete the installed eSIM. Send screenshots of your phone settings to customer support for quick assistance.