What is another word for telephone?

There are many words for telephone, depending on the context you're using it in. Here are a few options:

Formal:

* Telecommunication device

* Line (in the sense of "calling someone on the line")

* Phone (a more common, less formal alternative)

Informal:

* Mobile (for a cell phone)

* Cellular (for a cell phone)

* Landline (for a traditional phone connected to a network via wires)

* Handset (a more technical term)

* Wireless (for a cell phone)

* Buzzer (informal, often used for old-fashioned phones)

Specific types of telephones:

* Rotary phone

* Touch-tone phone

* Smart phone

* Cordless phone

* VoIP phone (Voice over Internet Protocol)

The best word to use depends on the situation and the desired level of formality.