2. A keyboard for a mobile device comprising: keys arranged in columns and rows including: a first set of keys associated with only numeric and alphabetic characters including the consonants of the alphabet, with the first set of keys arranged in an array of 3 rows by 2 columns; and an additional set of keys associated with one or more functions or symbols other than alphabetic characters; wherein the additional set of keys is not positioned in rows in which the first set of keys is located; wherein the alphabetic characters are ordered on each key based upon a predetermined frequency of usage; and wherein the first set of keys are toggle keys having a left side switch and a right side switch, including toggle keys with more than two characters, and the respective alphabetic characters are organized on each key based upon the predetermined frequency of usage such that, on each key with more than two characters, at least two of the characters have a higher predetermined frequency than the other characters, with one of the higher frequency characters being associated with the left side switch and the other of the higher frequency characters being associated with the right side switch; wherein indicia identifying the alphabetic characters is positioned on the first set of keys and arranged in a horizontal line, with higher frequency of usage characters being positioned on the respective outer ends of the horizontal lines of indicia.
2. A keyboard for a mobile device comprising: keys arranged in columns and rows including: a first set of keys associated with only numeric and alphabetic characters including the consonants of the alphabet, with the first set of keys arranged in an array of 3 rows by 2 columns; and an additional set of keys associated with one or more functions or symbols other than alphabetic characters; wherein the additional set of keys is not positioned in rows in which the first set of keys is located; wherein the alphabetic characters are ordered on each key based upon a predetermined frequency of usage; and wherein the first set of keys are toggle keys having a left side switch and a right side switch, including toggle keys with more than two characters, and the respective alphabetic characters are organized on each key based upon the predetermined frequency of usage such that, on each key with more than two characters, at least two of the characters have a higher predetermined frequency than the other characters, with one of the higher frequency characters being associated with the left side switch and the other of the higher frequency characters being associated with the right side switch; wherein indicia identifying the alphabetic characters is positioned on the first set of keys and arranged in a horizontal line, with higher frequency of usage characters being positioned on the respective outer ends of the horizontal lines of indicia. 15. The keyboard of claim 2 , further comprising at least one vowel key, the vowel key being associated with vowels, wherein the at least one vowel key is positioned in a row other than the rows of the first set of keys.