Tool to decrypt/encrypt messages with a mobile phone keypad. Phone keypads allow you to write messages in several ways: Multi-tap, ABC code, T9 code, etc. and can be used as a cipher.
Phone Keypad Cipher - dCode
Tag(s) : Telecom, Substitution Cipher
dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!
Phone Keypad Cipher
ABC or Multi-tap Code
The Multi-tap code is the name given to the telephone input technique that consists of writing a letter by repeating the corresponding key on the mobile phone keypad. For example: '2' for 'A', '22' for 'B', '222' for 'C', '3' for D, and so on. dCode has a tool for that:
T9 Code (Predictive text)
T9 code is the name given to the prediction algorithm that uses a dictionary to guess the word the user is trying to write. For example: '2' for 'A' or 'B' or 'C', '222' for 'BAC' or 'ABC'. dCode has a tool for that:
Tool to decrypt/encrypt messages with a mobile phone keypad. Phone keypads allow you to write messages in several ways: Multi-tap, ABC code, T9 code, etc. and can be used as a cipher.
Answers to Questions
What is the configuration of the keys on a phone keypad?
By default, on a mobile keypad (smartphone, iphone), letters are associated to digits according to this arrangement :
| 2 | ABC |
|---|---|
| 3 | DEF |
| 4 | GHI |
| 5 | JKL |
| 6 | MNO |
| 7 | PQRS |
| 8 | TUV |
| 9 | WXYZ |
How to recognize T9 mode?
T9 has short numbers, whose length is equal to the letter number in the word. There is little repetition of the same digit. This is the fastest way to type SMS without abbreviations.
Example: MESSAGE=6377243
How to recognize ABC mode?
The ABC multitap has long numbers (much longer than the original word), with many repetitions of consecutive digits (successive presses on the same key). This is the quickest way to type text messages with abbreviations.
Example: MESSAGE=633777777772433
Source code
dCode retains ownership of the source code of the script Phone Keypad Cipher online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be released for free. To download the online Phone Keypad Cipher script for offline use on PC, iPhone or Android, ask for price quote on contact page !
Questions / Comments
Version Française
or 
