Last week, we added that missing feature. Now when you are logging from your phone via email or SMS, anything that is not a number entry (like g125) will be interpreted as a note. For example, an email or SMS of g130 Feeling good today would result in a glucose entry of 130 and a note entry of "Feeling good today".
If you're one of our mobile loggers, we hope you like the addition of logging notes via your mobile phone. Let us know if you have any feedback.