If the devil were to create a doorway from hell straight into your bedroom, it would look a lot like an email app. While email is a valuable tool, it’s also a giant funnel into my consciousness. The single biggest change that helped me resist insomnia was to ignore work email when I get home.~ Gabe Weatherhead from, http://www.macdrifter.com/2018/12/fighting-the-insomnia-machine.html
I banished the phone (and everything else) from the bedroom about a decade ago. If you have a television, your phone, your computer or anything else in the space where you sleep, I believe you are making a grave error.