Hi I would like to know if there is free text messaging application ?

is there a free text messaging application or something else ?

Yea, make a google voice account. You can make and receive free calls, and send and receive texts. Does it work on TmobileX? Because I tried it awhile ago and it wouldn't lemme login. Anyway, if it doesn't, try using Gigsniper's Opera Mini.

I don't really need cookies, lol. (but they pretty yummay)
1. Go to google.com/voice preferably on your computer.
2. Sign in with your Gmail account.
3. Choose a Google voice number, it's basically another phone number, except instead of with Tmobile, it's associated with Google.
4. Follow whatever other necessary steps to finish up creating your number.
5. Go to m.google.com/voice on your phone, preferably Gigsniper's Opera Mini 4.2 or 5. (Hint: for best view go to Opera Mini settings and turn on mobile view.
6. Login with your Gmail account.
7. Scroll down until you see the Quick Call/ SMS links. Select the SMS link and you will be taken to a new window where you will then be able to send text messages for free! Be sure to send your friends this new number so they know to text it instead of yours. (what i did)