Hi! I have Z990G but I have the same problem, when I try to call someone or any company that I have to choose any option it won't work. Even for my voice mail I can't put my password, because there is not way to turn on the screen, even though I press every single bottom. I have my phone to show END bottom but nothing. I called the company and they reset my phone 3 times already and they don't know how to fix it.. Any idea for my phone?