Condense Text

Is there a mobile phone with a feature that can, if you want it to, 'condense' the text in your SMS? Sometimes I'm writing an SMS and I realise I want to condense it -- reduce the number of characters -- and I have to go back and change things like 'and' to '&' and stuff like 'today' to '2day'. I'd like the phone to be able to do this for me.

Why not write write the SMS using abbreviations in the first place? Why should I? Some abbreviations are uglier, and, with the way the predictive text works on my phone, some take longer to type in.

Ideally, the phone would have several levels of condensing that you can apply, starting with milder condensing that involves less drastic changes but frees less space, up to that involving more drastic but more space-saving changes.