As in, do you check the messages/whatsapp of your child between friends to make sure they're safe and not being bullied/or are being mean to other kids? As well as monitoring the rest of their general phone like internet usage & photos?
I do to my DD who's finishing year 6 this year. I didn't want her to have a phone but all her peer group do at school and didn't want her to feel left out. She has strict hours she's allowed to be on it though, mainly weekends only at this age.
Only reason I ask as after speaking to a few different Mum's they think this is an invasion of her privacy and my DD will start to resent me for it as she's get's older?