Could you please read the Question and Answer Guide, link in my signature. In order to help you we need more information.
Speaking from my experience most people are too lazy to read it, even when pointed out, so today I will copy paste and see how that goes.
Unfortunately very often people just ask questions without giving us too many informations, therefor here a little guideline how to create a useful Q&A topic.
Long and detailed description of your problem
When did it happened?
What were you doing when the problem occured?
Is it a new issue (e.g. after firmware upgrade)?
Yeah I have a similar problem with the sms. I had updated my firware from 4.3.1 U to 4.3.2. A.
Basically I can text but I cannot send a new text to a new recepient. When I try to send it just freezes.
I hadnt noticed this before because eveyrone who I text with had texted me first.
I am thinking to reset phone and I assume that wont degrade the firmware version.