1. Aesthetic needs: Some men may think that a beautiful picture is beautiful, and using it as the background of the mobile phone screen can make them feel happy and satisfied. This demand is similar to people choosing beautiful scenery, artworks or fashion photography as background pictures.
2. Social needs: Some men may think that showing their aesthetic taste in social situations can increase their confidence and charm. In this case, the pictures of beautiful women on the mobile phone screen may be a way to show themselves to attract the attention and recognition of others.
3. Emotional needs: Some men may seek emotional satisfaction by looking at beautiful pictures. This behavior may be related to their lack of stable emotional relationships or their desire for the opposite sex. In this case, the beautiful pictures on the screen of the mobile phone may be a way of emotional sustenance or satisfaction.
4. Potential sexual preference: Some men may prefer the opposite sex in sexual preference, and beautiful pictures on the mobile phone screen may be a way to express this preference. This behavior doesn't necessarily mean that they don't respect women or have any improper intentions towards women.
It should be noted that these explanations are not absolute and everyone's situation is different. Beautiful pictures appearing on the mobile phone screen are only personal behaviors and should not be used to judge a person's personality or values.