A mobile phone (also known as a wireless phone, cell phone, or cellulartelephone) is a small portable radio telephone. The mobile phone can be used to communicate over long distances without wires.

The Internet phone, also known as a broadband phone, is a digital communications device used for making phone calls via the Internet. It is also a commonly used Voice over Internet Protocol (VoIP) application device.

A disposable phone number is a virtual phone number that is usable temporarily. The temporary number is purchased from a service provider. Calls to that number are forwarded to the user's existing phone.