To avoid unexpected roaming charges from your home provider while using an eSIM, follow these best practices:

1. Disable Data Roaming on your Primary SIM: Go to your phone’s cellular settings and ensure roaming is OFF for your original home SIM card.
2. Set eSIM as the Data Source: Explicitly select your travel eSIM for “Cellular Data” in your device settings.
3. Turn off “Cellular Data Switching”: (iOS only) Ensure this setting is disabled so your phone doesn’t automatically switch back to your home SIM when the eSIM signal is weak.
4. Use Wi-Fi for Heavy Downloads: To conserve your eSIM data, use local Wi-Fi for app updates, video streaming, and cloud backups.