What is what does the phone goes both ways mean?

The phrase "phone goes both ways" refers to the ability of a telephone line to send and receive calls. This means that the line is bi-directional, allowing for two-way communication. This is a fundamental feature of telephone technology, allowing people to speak with each other no matter where they are in the world. It is important to note that while modern phones may also have other features such as internet access, text messaging, and video calls, the basic function of being able to make and receive voice calls remains an essential aspect of this technology.