<i>If you believe using your phone late at night is harmful to you at all then why continue to maintain a that behaviour?</i><p>Paraphrasing from one of your previous posts, &quot;if you really have to question every action that might be harmful then you would never go outside, put anything in your mouth, go to the bathroom etc. Your question really only makes sense when considering activities that have a relatively high risk of harm in which case the answer has to come down to two things. Firstly how harmful is this activity? And secondly, how much harm am I willing to take?&quot;<p>If a bed mode is enough to make the disruption to one&#x27;s sleep negligible, why not use the phone late at night?