You may need to reset iMessage after installing your eSIM. You can reset iMessage with these simple steps:
1. Go to Settings on your device
2. Go to Messages
3. Toggle iMessage OFF
4. Toggle iMessage back to ON
5. Tap on Send & Receive
6. Uncheck your number and make sure your email address is checked. This way, you’ll be able to send and receive iMessages with only a data connection.
When you finish using your eSIM and wish to turn on your Primary SIM, you can go back to Settings > Messages > Send & Receive and check your phone number again.
If you are still not able to use iMessage, please contact us for further assistance.