It sounds like what she wants is attention from you, and perhaps to spend some special time together. 
I say this because I have three small children and a similar predicament. The older ones see me frequently on my phone on IG looking at watches, and have taken an apparent interest. I got the older one a children quartz watch which he wears all of the time and which has become a point of common interest, discussion, and shared experiences. He will sometimes look at watches on IG with me and tell me which ones to Like now, and I will make a concerted effort to not be on my phone as much when I am around my children.