DD has asked if she and her friend can exchange email/phone numbers so they can message each other. Until now, she only has family in her phone. I hadn't planned for her to have a phone this year (I was planning to give her one next year) so by my thinking she's too young for online drama. I have told her that I will speak to friend's step-dad and ask what he thinks and what their rules are, same with best friend's mum, before I decide.
What age did you let your DC message friends? And did you stick with text message at first or allow WhatsApp even if they're technically too young for it?