My RAM seems to be on 56% used in idle even I've run the Cleaner. It is on 70-90% on load. Is this normal?

Another thing, my temperate is 45`C when charging from 15% to around 80% then the temperature drops back to around 37`C and it maintains at 37`C until it is charged to 100%. Is this normal again? I have one theory is that to prolong the battery life so that it doesn't overcharge, the battery is charged with high current at low percentage, afterwards it is a slow charge which results in that physical change in temperate that I observed. Can anyone confirm this?

BTW, how to take screenshot on this phone >.<?

Im a newbie to smartphone here. What is the purpose of installing the driver?
I've attempted to install it without my P780 plugged in. But it shows me "installation failed"

Does P780 support Helium backup? Is there any extra drivers needed to be installed in my desktop for that to work? o.o

I tried b4 I asked. But the Helium app in my desktop says it can't detect my device even though I've connected it via cable. That's weird coz my desktop did detect my P780 and i can access my internal and external storage. So I was thinking that Helium might not support lenovo smart phones. I just want to restore my game data in my Nexus 7 to the phone. Not the apk apps. Meh there are still a lot for me to learn.

Anyway, what launcher do u guys use for your P780, stock launcher or others, mind sharing? I'm still using the stock launcher. Wonder if there's any launcher which suits this beast.