Phones and 11 and 9 yr olds, does your kid have one and how do you manage? ?

Most of my friends and me don't have phones until we were about 14 and 15 even though I was planning to get one at 18 but couldn't resist. But when I first got my phone at 14 I didn't really use it because there are nothing to catch up on if it was a school day because we are going to see them 5 times a week anyway. During the weekends, break, or holidays we would usually use them just to contact each other just to plan a day out. I guess a lot of young children would have one nowadays because they see others having them and go under the influence.