Hi, I just bought my Sony Xperia Z ultra recently. But when I turn on the adapt to lighting condition in display and it turn to sleep on it's on by 15 seconds, the screen went black but the phone itself is still on. I can see the screen. and just now, when I was still using the phone, (without the adapt to lighting option) the screen blink like a old tv turn off effect and went black again. Can you people explain this to me ? I trusted Xperia for quite sometime. Please do not disappoint me.
