Does anyone know how to make the illumination/backlight come on? I know its probably something small to do, like holding a buton down.

It used to do it when I first purchased it but now since I changed the battery it doesnt come on anymore. The book doesnt tell me anything useful either.

Help me out people, please.

Hold down all 4 buttons till it beeps, then press the unlock button, to do vibrate, press the lock button

Thank you soooo much

Not a problem, glad I could help.