My daughter is 11. I fought with my wife as she was in favor of giving her a cell phone for a number of reasons and I was not. About half of her friends have them, some have had them since 7 or 8. What eventually convinced me - I wrote a contract that she had to read, understand, and sign, and it has consequences. It took me a few days as I asked other parents for ideas and copied some good ideas I found online. I also turned off all games, camera web browsing, etc. on her phone. She is only allowed to call or text (respond) to people who are in her address book, which my wife or I control. This has actually worked out extremely well for us, as my daughter is learning responsibility and she's had it at least 6 months now with zero issues. She was provided with an otterbox case to protect it, but knows she'll have to pay herself if it's ever damaged or needs upgrade/repair. I let her have feedback into the rules, wording and consequences on the contract. We'll eventually relax some of the restrictions, but it'll be quite a while before I open up internet access or social media.