what is a soft key on cell phone
10 most extreme places on Earth. A soft key is a key on a computer or cell phone that can be programmed to perform multiple different functions of the userâs choosing. Most keys, including letters on computer keyboards and numbers on cell phones, are considered âhard keysâ because they cannot be reprogrammed.n this instance, the numeral key is acting as a soft key because it has been programmed by the user to perform a specific task. The term has a slightly different meaning on smartphones with touch screen keyboards or keyboards that appear graphically on the screenâs display device, rather than being fixed buttons.