Yeah, seen that so many times.
Happened just yesterday.
Was out in the park walking the puppy and this woman was there with two small children (am guessing 4 and 5) and they were really excited with all the things in nature they were discovering. I heard them as I walked past.
'Mummy, Mummy, look, look. It's all green. Look at this leaf, Mummy.' Lots of stuff like that. All excited and looking to their mum to participate in their discoveries.
The mother was on her mobile phone and totally engrossed in that. Not one single bit of interaction with the kids at all.