So, I have never had any sort of texting plan on my iPhone since I got the phone. My family plan has been set up with 1 smartphone and 2 dumb phones, with shared talk and non-shared data. However, I noticed when I got on myAT&T to check usage, I have a section for Texting and it says that I have used 0 out of unlimited texts. What is this? How do I suddenly have unlimited texting?