If your eSIM supports data-only, you can still use another line for voice and SMS.

In order to use your primary line for voice and text while you enjoy your eSIM for data, you need to enable the primary line and set it up as your Default Voice line.

The data roaming may also need to be enabled depending on the requirement of your home provider. This may incur roaming charges, so we highly encourage you to consult your home provider to learn about the charges before proceeding.

On iOS

1. Go to Settings>Cellular
   
2. Tap your Main / Primary line
   
   
3. Toggle ON “Turn On This Line”
   
4. Go back to Cellular. Then tap “Default Voice Line”
   
   
5. Select your Main / Primary line
   
   
6. Go back to the Cellular page. This time select Cellular / Mobile data
7. Ensure that you keep your eSIM selected for mobile data.
   

On Samsung devices

OPTION 1: via Quick Settings Panel

1. Swipe down from the top of the screen. (You may need to swipe down again to see the full menu)
2. You should be able to see CALLS | TEXT MESSAGES | MOBILE DATA. Tap on Calls.
   
   
3. Select your Main / Primary line
   
   
4. Do the same for SMS
5. Ensure that you keep your eSIM selected for mobile data as well. 

OPTION 2: via Settings

1. Go to Settings > Connections > SIM card manager
   
   
2. Scroll down until you see the Preferred SIM card section
3. Tap on Calls.
   
   
4. Select your Main / Primary line
   
   
5. Do the same for SMS
6. Ensure that you keep your eSIM selected for mobile data. 

On Pixel devices

(Please note that the below steps may vary depending on your Pixel model)

1. Go to Settings >Network & Internet > SIMS
   
   
2. Select your Main / Primary line
3. Toggle Use SIM to turn it ON (if it’s not yet enabled, otherwise, go to the next step)
   
   
4. Look for Calls Preference and tap on it.
5. A window will pop up asking which plan you want to use for calls.
6. Select your Main / Primary line
   
7. Do the same on step 3, this time for SMS Preference.
8. For Mobile data, ensure that your eSIM is selected for it.

Once you have followed the above steps, you should have your Main / Primary line set for calls or SMS, then your eSIMs for mobile data.