I've noticed lately that my sometimes my screen is unresponsive to touch. The hard touch buttons on the bottom work, so in order to get my screen respond to touch, I have to turn the screen off then on. Sometimes, its not the whole screen, but a particular area, for example while texting, the "send" button doesn't work or it might be like the letter "h" or something. So i have to change to portrait or reboot my phone for it to work. I tried hard resetting my phone, still same issues. Anyone else have this problem? Any solutions? Could it be because of an app or live wallpaper or something. Obviously the 30 days are up now (bought 8/31) So can I take to the sprint store or i have to contact samsung.