SMS Keypad
| 1 | 2 acb | 3 edj |
| 4 ihg | 5 olk | 6 nmx |
| 7 spwq | 8 tuv | 9 rfyz |
| * | 0 | # |
Based on Robert Edward Lewand’s Relative Frequencies of Letters in General English Plain text. E, T, A, I, N, O, S, and R are all available in 1 tap and on separate keys.
Of course, the letters do not all map to the usual digit, so spelled phone numbers (1-800-4-CHEESE) won’t work. Here is a backward-compatible version:
| 1 | 2 acb | 3 edf |
| 4 ihg | 5 lkj | 6 nom |
| 7 srpq | 8 tuv | 9 ywxz |
| * | 0 | # |
This promotes E, I, N, and S to 1 tap, but keeps N and O, and S and R on shared keys.
1 comment on SMS Keypad
1. Mom says:
Lenny, on the backward-compatible version you have a typo – “j” in place of “g” (digit 4).
I do not think version 1 is viable, but this one is a great idea!
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