If you want to get your daughter a smartphone but are worried about what she could encounter online, you can block certain sites and apps through parental control settings. (kidshealth.org)
Many tablets for children will come with advanced parental control settings, so it's worth considering if these will be handy for you and your little ones. (t3.com)
If you add an adult account with an age of 18 or over, you can make that user a family manager with permission to change parental control settings, too. (howtogeek.com)