The more practical goal is creating enough distance between screen time and sleep so the brain has a chance to settle.
A phone may seem like a harmless companion at bedtime, but the combination of bright light, constant stimulation, and late-night notifications can quietly work against healthy rest.
Sometimes the easiest way to sleep better is also one of the simplest.
Put the phone down a little earlier.
Give your eyes less light.
Give your mind less stimulation.
And give your body the chance to recognize that the day is finally over.