BlackBerry phones (PDAs first) got their name because of their distinctive keyboards - the keys were arranged in a way that resembled the fruit. But let's not look at a straight up QWERTY keyboards or even how the keyboard slides or rotates out of the way (we did that two weeks ago. Instead let's look at more creative implementations of the keyboard itself. If you haven't seen it, this is a great video that explains how the telephone keypad came to be. Bell Labs ran tests on many, many designs until it settled on the one we know today. With the invention of the SMS, keypads needed to type...
Source: https://www.gsmarena.com/counterclockwise_mad_scientist_ideas_for_phone_keyboards-news-32067.php
