Not sure of the point about carrying devices if you haven't got 4/5g.
A lot of people use WhatsApp for texts including their parents.
A lot of people who come here are here for some time and I like to make people feel welcome. Sometimes they will remember something they've seen on youtube or similar and want to show the rest of us. Friends and family in other countries and they are here at the time. Liking something they've had and they pop it in their shopping basket whilst they are still here.
There's many, many examples of why they get used but without being anti-social.
Do you have strict parental controls on your main WiFi which restrict even you from accessing any adult material.l? Highly doubtful, as Netflix etc would automatically be banned...
I don't have control for the main access. That's only for me. The children have their own passwords and restrictions based on age.
It's fantastic having something that allows you to do this.
If a minor can only use the phone for texts and calls, well that's on their parents for buying an internet-enabled phone. If any came and moaned at me for allowing access I would ask them wtaf they were on.
How would you feel if your 12 year old was accessing adult content online, perhaps even on chat groups or dating sites when they were at a friends house and you didn't know?
I educate my children about these things. Things like FB, they cannot have accounts until 13, however, in my home I have exposed them to it. I would be disappointed, of course, I would also want to know why. Sometimes we all do things out of curiosity.