I have found an old LG VU phone that my mom had previously used, I got a sim card for it, put it in and started the phone up. Weird thing is, whenever I touch the screen the phone buzzes, and I can only touch the bottom buttons on the screen like TV, contacts, menu, ect. no matter where I touch on the screen, and when it goes to them like to dial, I can't dial anything and when I try to touch the screen the phone just makes a buzz noise but doesn't do anything, and I can only hit back, call, and options. What's the problem? Any help?