User guide

About "SonicHANDY" message encoding

As an effort to squeeze more characters within a single SMS message, SonicHANDY encodings were introduced. There are five of this encodings: one 4-bit, and four 5-bit encodings. A 4-bit encoded SMS can contain up to 252 characters, and 5-bit encoded SMS can contain up to 201 characters. 4-bit encoding is intended mainly for exchanging numerical information, and supports digits as well as some special characters like parenthesis, brackets, etc. There are 32 possible characters for 4-bit encoding: 16 of them occupy one 4-bit character spot, and other half (probably not used so much) occupy two 4-bit character spots (one spot is required for escape character). 5-bit encodings contain similar character sets; 64 characters total, half of them occupying one, and half of them occupying two character spots. Depending on the message type, for example if it contains less letters than numbers, more characters can be squeezed in it by altering encoding. This is done automatically and transparently for user.

Note: When writing message in SonicHANDY encoding, the only characters that are possible to use with that encoding are printed below the text. First half (upmost characters) will occupy one character spot, and the other half will take two character spots.

IMPORTANT! SMS messages written in SonicHANDY encoding can ONLY be read with SonicHANDY. They can not be read on a mobile device screen. Do not send this type of SMS messages to a person not familiar with SonicHANDY, as they will be unable to read the messages (unless they install the application).

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