how can I set time limits on my childs phone

iPhone is not a toy and is meant for use in responsible way. If you let a child have an iPhone, you should have rule(s) to what is allowable since there is no such options on iPhone. You have to take it away when time is up.

If you are in the U.S., most of the official carriers offer some form of parental control. Yes, there is a monthly fee. Give them a call.

Best of luck.

I wonder if anyone outside of the U.S. ever asks this question?

Hi Carrie

I'm sure when you asked this question you didn't expect to have your parenting called into question. So to answer your question with a more applicable answer. I've been using an iPhone app called Parentkit. It's by far the best app out there to assist parents in managing their child's iPad/iPhone use. The parent can schedule what aspects (apps, safari etc) the child can gave access to and a specific time period when access is allowed. We've been using it to prevent the kids from using their iPad during school hours but allowing them to use it during lunch and recess breaks. The best part is this can all be done remotely from your own iPhone or iPad. Hope this helps.

Thanks - very helpful