Thats great that you set limits with their screen time as a lot of parents don't
I have seen a small child who must have been no more than 1yr old in a pram screaming and the only way the mother could get the child to stop crying was to hand over the ipad.

This is true about light emission keeping people awake, am I right in thinking that our skin has light receptors?
anyway, we live in the north of Sweden where the sun does not go down for two months, and during this time I find it very difficult to get a good nights sleep.
The smallest amount of light from these phones is bad and then if you combine that with the signals they give off then its no suprise.

Thank you for the interaction