Provision to run USSD commands on phone.
(I know this is not related to "text", but you already stretched your legs on to photos & videos.)
Run USSD commands from your mighty text client on phone and show the logs on web.
you can do everything that is available on "USSD checker" mobile application.
Today I use it to check my talktime balance (123#), Data balance (12311#), SMS balance (123*6#)