SIM-1 is +1 412(my-number), and is one of the numbers I actually own. My SIM-1 line will remain the first SIM slot of my choice phone. Many smartphones are dual SIM, and the phone I will choose will always be dual SIM. With SIM-1, I will have unlimited voice, SMS, and 5GB of data. This will allow me to have access to iMessages, and RCS messages since both resources requires a data connection. I will also have a phone that will connect to a Wifi network. This means when I am home, the data usage will be with my home internet.
This will likely be the number I will call from when I wish to reach people that I need to. There could be times where I will have to charge this phone. When that happens, I will use my home phone to make the call. This will mean that people in my contacts will get a new contact card that will provide both my home and SIM-1 number.