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, Vanity, etc. and can be used as a cipher.
Phone Keypad Cipher - dCode
Tag(s) : Telecom, Substitution Cipher
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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 'CODE' is written '222-666-3-33'. 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'. 'CODE' is written '2633'. dCode has a tool for that:
Answers to Questions (FAQ)
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:
| 1 | various symbols |
|---|---|
| 2 | ABC |
| 3 | DEF |
| 4 | GHI |
| 5 | JKL |
| 6 | MNO |
| 7 | PQRS |
| 8 | TUV |
| 9 | WXYZ |
| * | star/asterisk and other symbols |
| 0 | space (but not always) |
| # | sharp and other symbols |
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 online "Phone Keypad Cipher" source code. Except explicit open source licence (indicated CC / Creative Commons / free), the "Phone Keypad Cipher" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Phone Keypad Cipher" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, copy-paste, or API access for "Phone Keypad Cipher" are not public, same for offline use on PC, tablet, iPhone or Android ! Remainder : dCode is free to use.
Need Help ?
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NB: for encrypted messages, test our automatic cipher identifier!
Questions / Comments
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