How do I choose which SIM handles calls and which handles data?

You can set each line's role independently - your physical SIM for calls, your Gohub eSIM for data, or whichever combination suits your trip.

iOS

Go to Settings → Mobile Service

1. To set default data line:
   Tap Mobile Data → Select the eSIM/SIM you want to use for data

2. To set default call line:
   Tap Default Voice Line → Select the eSIM/SIM you want to use for calls

Android

1. Go to Settings → Connections → SIM Manager
2. Scroll down to Preferred SIMs. Select your default line one by one for each purpose: Calls, Messages, and Mobile Data

📌 For most travelers, the recommended setup is: Physical SIM for calls and messages, Gohub eSIM for mobile data.

⚠️ On iOS, remember to turn off Allow Mobile Data Switching to prevent your phone from automatically switching data to your primary SIM without you knowing.