Wow some very alarmist and narrow minded views here.
My 7 year old has an iPhone with a working SIM and her own phone number. She has her own iPad too which she got when she was 5. My son is 3 and has his own iPad too. It’s in a shock proof case and stops him wanting to use mine. Neither child has access to my phone or iPad - I have my work emails on them and sensitive information on it.
If this thread had been how many 7 year olds have been allowed to play with your phone the answer would be very different. Far better their own restricted devices, with no messaging, no potentially sensitive information, set up very specifically for them.
IPhones are part of everyday technology. I want my children to be aware of the dangers, to grow up and into the technology rather than to go from zero to their own phone at secondary school with all the other changes, hormonal, school, relationships that hit them at that time.
My 7yo loves creating stop gap animations on her phone with Lego or play dough. Her patience and editing skills are very good for her age. She also loves doing photos and editing. She is part of a running club and loves to track her progress or use it as an iPod. She has WhatsApp for family but I am in every group and she isn’t allowed private chats. She is learning to use this great technology for what I consider good purposes (away from pressures of social media). She doesn’t watch or create YouTube videos, she isn’t on Instagram (I don’t even put her face or name on my public one).
Her friends don’t know she has a phone, she was told under no condition is she to mention it at school or it is instantly removed. She has to give it to us at bedtime and will often go several days before asking for it again. It’s just a tool to her.
iPhones aren’t the villains. Our children will have them (or similar). I’d rather mine grew up and into using it, gradually expanding their use, understanding what is good and what isn’t right. What could be a danger.