I bought a Nokia Lumia 520 and the back, start and search buttons are not illuminated. I checked the phone settings, I rebooted, reset only to find out that this is normal. Are all Lumia like this? Do you think it’s normal?
Unfortunately that is normal for that model. All models are not like that fortunately. In newer models the buttons are on the screen display instead. This way they are illuminated if your screen is lit up.