My 26 year old has his own cell plan. Hubby and two girls and I are on a great family plan. The girls got their phones when they started high school. A safety feature for me....If the bus was stuck in a ditch, for the many bomb scares, and school evacuations, if they would be staying late and needed a ride home....then it was off to college, and I had them call as they were leaving for home, or when they got back to school parking lot. They pay for the unlimited texting, and the extra iphone charges. The girls text constantly. Even when we are shopping, one will text.."Mom, where are you"....Aisle 3!! I text...
There have been quite a few lost phones, and ones stolen out of lockers, but anytime there is a problem, or question, I'm on this end, so my mind is at ease. Since the 18 year old walks to school about two blocks each day, she calls me, or her sister and talks until she gets to the commons. That way, she feels more secure being alone. I hear more from them now, than when they were living at home!!
Magic Age.....when they show responsibility that they deserve one, or if you are in an area where there is a child safety issue.