Install with reliable Wi-Fi
In most cases, installing the eSIM before departure is safer because you still have stable internet and time to solve any compatibility issue. Do not assume installation and plan activation happen at the same moment.
Activation timing differs
Some plans start when they connect to a supported network, while others may start at installation or purchase. The provider's current activation policy is the source of truth.
- Read the activation instructions
- Label the new line clearly
- Keep data roaming off until needed
- Select the eSIM as the mobile-data line after landing
Avoid accidental home-carrier charges
Your primary SIM can remain available for messages, but roaming settings and carrier rules vary. Disable data switching and confirm what your home operator charges abroad.