Why are parents so desperate to track their kids? Don't they trust them?
We had a problem with our oldest not coming home on time. So we asked them, and they didn't have a way to keep track of time. So we got them a cheap Casio and the problem is solved. They love the watch, and independence, and trust.
When we give our kids a phone, it won't have any restrictions, because it means we trust them. We don't, so we're holding off. I'm unwilling to spy on them, so they'll get a phone when I trust them without filters.