What does it mean that girls love to lie flat and watch their mobile phones? It's like I'm not a girl, and we can still talk well without that "Du".
Just kidding, in fact, boys and girls are all the same, and there are all kinds of gestures when watching mobile phones. Not only girls can use this posture, but not all girls like to use this posture. Look at it any way you like. There is nothing to study about the posture of mobile phones.
I like to watch mobile phones on my side, because I personally feel that watching mobile phones on my side is more relaxed and comfortable. If I lie on my side, my hand with my mobile phone can rest where you are lying. Don't hold it high all the time, your hands are sore and your eyes are tired. How to look at the mobile phone and what posture you are used to is decided by everyone according to their personal habits. This will definitely choose a comfortable posture that suits you, so that you can look at your mobile phone better.
There is nothing to study about posture. Men and women are all the same. What kind of posture they like and what kind of posture they are used to, naturally, as long as they look at their mobile phones, they will look at them in the way they are most used to. It's nothing.