The Cellular telephone (commonly “mobile phone” or “cell phone”) is a long-range, portable electronic device used for mobile communication. In addition to the standard voice function of a telephone, current mobile phones can support many additional services such as SMS for text messaging, email, packet switching for access to the Internet, and MMS for sending and receiving photos and video. Most current mobile phones connect to a cellular network of base stations (cell sites), which is in turn interconnected to the public switched telephone network (PSTN) (the exception is satellite phones).
A gadget is a device or an appliance that has a useful specific practical purpose and function. Gadgets tend to be more unusual or cleverly designed than normal technology. In some circles the distinction between a gadget and a gizmo is that a gizmo has moving parts, whereas a gadget need not have them. For example, a digital watch would be a gadget, while an analog watch would be a gizmo.
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