I have boost service and have been using a nextel i-860 for 6 mo. with no problems now I can't send text messages. I can recieve them just fine. I called boost and they tried something, still nothing so I called back transfered to sprint web department they told me my text would not work because I was using a nextel phone. So I waited a few days and called back boost transfered me to tech support he "reset my phone" and said it would work now still nothing!!!!!! Is there anything I can do??? As it is right now I can only send text messages to my husband on nextel network or to email addresses. Please help