Hello Everybody!!! I have two phone N8 Symbian belle and Galaxy S4 Android kitkat 4.4.2 Both have AMOLED screen. Nokia N8-----On N8 there is one feature called Screensaver clock. Whenever I click on power button whole screen becomes black and shows beautiful clock. Samsung Galaxy S4-----I have Off clock. whenever I click on power button whole screen becomes black except the clock. BUT HERE IS A HUGE DIFFERENCE..... RESON---UNKNOWN N8 --- Clock---Battery decay 1% in 3-4 Hrs. S4-----Clock---battery decay 1% in JUST 7 MINUTES: 00:07 only Hence its a huge battery drain however both have AMOLED Screen display. Please suggest the technical reason behind it. I am curious of having such screensaver clocks for Android as well. But nothing Available...!!!Alas.... Please do not suggest for daydream as it works only for Dock/charging mode.