I have a 3D that I got a couple of weeks ago. I returned my first one, purchased a monthago, because it kept freezing up. Sprint was very cool, encouraging me to swap it right away. The new phone has been much better, but a few times, the touch screen just doesn't work in the apps screen. A restart solves this. How concerned should I be? Also, I canct seem.to attatch videos to omy MMS messages because the size limit has been reached? Even though it is set to maximum? Do I need to download Go Text or something? Android noob, obviously.....