I am having issues on my N8 from last couple of days. I am not being able to send of receive any TXT messages Can somone help me how can i fix the issue ?
Try going to Settings, Application Settings, Messaging, Text Message, Messaging Centers. You should see just T-Mobile listed. Click on it, and use this number (if it's different from what you see):
+12063130004
That is usually the problem when you can't send or receive...