How to set up an iphone for an 8 year old

My sister has given my niece an iphone and there aren't any restrictions on it. I've set up screen time and know how to limit websites as I do that for my own productivity. I've removed the ability for her to add contacts as well, so I was wondering if there was some way on screen time or some other app we could use that would prevent her from texting anyone that isn't a contact.Thank you so much for the advice. via /r/Parenting https://ift.tt/2QVOKG6