A standard telephone keypad, with four rows of three keys each. The top row consists of 1, 2, and 3, with keys continuing down in order until the last row, which is usually *, 0, and ...

A standard phone keypad consisting of the numbers from 0 to 9 and including the signs "*" and "#". Alphanumeric keypads are an upgrade to those and are used to enter text as well as numbers.