Are you slightly unhinged like me and buy old technology just for aesthetic? 😜 After buying my frog phone (for aesthetic) I discovered that I can hook it up to my cellphone and make outgoing calls and receive incoming calls thru it with a Bluetooth device from Amazon called “Cell2Jack.” It works really well and it’s crazy to hear the dial tone on the frog phone with no landline connection. This device will work on any landline phone using your cell #. Now I just need someone to call me instead