Cseries :: Upgraded From 3310 To C5-00 5MP - Why Does The Display Switch Off When 3310 Is Not Being Used

I am a long time Nokia user. My previous mobile phone was a model 3310 which I had from 2001 and it died only a few months ago. That phone served its primary function well - making and receiving phone calls. So I needed a new mobile. To my dismay it is almosty impossible to find a normal mobile phone which is just a phone. I selected the C5-00 5MP as it is closest to what I need (although it too is loaded with too much junk) and I wanted to stay with the Nokia brand.

- why does the display switch off when the phone is not being used? How do I know if the phone is on or off? The 3310's display was always showing something when it was on

- how to delete the wallpaper? My phone is a functional device not a piece of art. I can't find anywhere the option 'no wallpaper"

- why can't I remove the functions I don't intend to use? maps, internet, e-mails radio etc are not required