I am having problems receiving some text messages. It is inconsistent; sometimes I will receive them and sometimes I don't. This is a problem because people are asking why I am ignoring them. I noticed this happened with 1 person when I first got my phone last November but lately, many people are telling me that they are sending me messages and I am not receiving them - both sms and mms. They have shown me on their phone that they sent a text and I never received it. It is not limited to a specific carrier. How can I fix this? I have already done the *228 option 2.