A colleague cannot put down her phone, not for a moment. She's a lecturer in English. Today I came into one of her classes, and she was holding her phone in front of her face with one hand while reading from a textbook held in the other. Amazing to behold. She was giving a dictation test and chatting and giggling at the same time! This is forbidden at my university. I could not help but notice that she is doing a rather poor job. She is not focused on her work at all. She does this every time I see her, which is about three times a week.
We are very friendly with each other and I do not want to make her angry. At the same time, I am astounded that she has started to do this, and now I feel that I should say something. I am not going to go tell on her, so I either let it go or I figure out a way to tell her to knock it off.
How should I tell her to stop? Just to be clear, her habit clearly gets in the way of her work, and that means the students are not getting what they deserve.