ATT has separate text and data plans. I hardly use either, but I had to get data to get a smart phone. I figured I would use an android app for texting. Problem is: the andriod app I use - textplus - only works for outgoing texts, and replies to those texts. If somebody texts to my cell number, it is picked up by ATT's standard text client, and I'm charged $0.20 a message. Not a big deal, but it would be nice if there was an SMS app that could replace the standard ATT app.