I think they can have their own choice.
I think to a certian degree with developmentally apporaite limits technology especially with ealry exposure is good for a child in the context of developmentally apporaite limits
They should be able to do all the things adults can do so they become more knowledgeable and intelligent. Becoming a phone addict is not the product of what age when someone gets their phone, but It is the amount of other task they are able to do.
I am 18 and I don't have a mobile phone yet.
It is wrong for such a little kid to have their own mobile phone for them self, because though they have their own phone they wouldn't know how to handle it and could break it. Also, literally no one their age that could have a mobile phone so it would be a waste of money! Lastly, phone lines at ages <10 could result in people thinking them as a spoiled brat, resulting in no friends.
No way i was 11 when i got my phone and i still have it now. Recently i was at a hotel and my younger siblings friend who was 6 had an iphone 5c and i thought since it was not like she had no parents at home with her ( she has a stay at home mom) but every one has their own opinion and maybe an emergency phone that can just call home or 911
The only reason I have a phone is that I go to school on the other side of my city and my parents want me to stay connected to them. I don't even use it often!