What characters can I use in my text messages? Brad Down Updated September 07, 2015 00:59 Follow We support the GSM character set and UTF8 character encoding. http://en.wikipedia.org/wiki/GSM_03.38 http://en.wikipedia.org/wiki/UTF8 You can use any of these characters in your message, if you use a character outside this set it will not appear. Related articles Short Codes...How do you get them? How much are they? Forward SMS keyword responses to your phone How many characters can I have in my text message? Do I pay for each SMS in my message?