Concatenate/combine strings

Hello

First of all I am a newbie :)

And I am working on a project and I was wondering if it is possible to combine a string with a variable to clean up the code a little, something like this:

char phoneNumber[ ] = "123456789";

Serial.print("AT+CMGS=\"" + phoneNumber + "\"");

This gives an error on compiling.

Looking forward to any replies, thanks!

Best regards

Andreas