I have two phones, each serving a role as defined in Call Handling. As needed, if any phone needs to be upgraded, they will replace the respective phone. This is to keep my life as simple and efficient as possible.
The first phone is a VTech DECt phone which is the house phone. Most calls made or received comes to this phone. This is because it is connected to an ObiHai 200 ATA. With that in mind, this phone supports making phone calls using Google Voice. Google Voice provides free calling within the US or Canada.
The second is a Google Pixel 3a XL. This is a basic cellular phone with only one SIM slot, and 64GB of storage. This phone does support all carriers in the US, but my Life Wireless service is inserted into the phone.