Why do the circles around the numbers on the lock screen only sometimes light up?
I don't know why, but sometimes, they light up as white circles, but other times, only the ones near to the centre of the wallpaper light up, and only the parts nearest to the centre of the screen. That'll be to do with the wallpaper itself, as it's got a bit of a white bit in the centre and black everywhere else - but why do the circles only sometimes light up? And is there a way to make it so the circles are always lit up?
iPhone 4S, iOS 7.0.2