My Motorola SLVR L9 is malfunctioning since the last 2 days. The phone remains on but not a single button in keyboard works. I am able to receive calls but cannot answer them as the buttons don't function. The strange thing is i can switch the phone on by pressing the end button/power on key. But after its on, i cannot access any of the functions as the Keyboard doesn't work at all. i tried removing the battery and put it back but it didn't work either. In this case should i flash my phone or is it a hardware failure? Kindly assist me.