I don't know if there are more positives than negatives. I'm just saying they're not all bad. Here are the advantages for us (yes, I'm aware a brick phone could do some of these but not as easily)
DD likes (right now 😂) that I can track where she is when she's out alone. She says she feels safer. She also likes that she can track me if she doesn't know how long til I'm home.
She has a WhatsApp group for group projects so they can plan and discuss when not in school
This one is niche for us but she spends her school holidays in a different country so it helps stay in touch with school friends
She can easily speak to me on WhatsApp when she's in the other country without building up awful phone bills
If something piques her interest when watching tv she can immediately google and find out more (yes, I check her search history and we talk about fake news/ bad sources
She can have face to face regular contact with her cousins in Australia at no cost
Sure, brick phones or laptops can facilitate some of this but usually not so freely and convenient and the laptop doesn't fit in your pocket.
I genuinely do get the dangers. I just think we need to teach the kids how to face them. Life is dangerous. Hell, I had to teach my 18 month old not to run around with food in her mouth this morning. The smart phone thing is hard for us because we never had this danger growing up, but it's like everything else. Teach them the dangers but don't scare them into thinking there's no good side