The iPhone that you should buy depends on the features of your child’s needs and budget. Children at the age of 11 are less likely to need high-end expensive iPhones. The older models will function great for your kid. You do not need to spend a lot to get a phone for an 11 years old kid. If you have an older, functional iPhone at your home, you should give it to your child. Otherwise, you should save money by looking for iPhone 6, iPhone 7 and iPhone 8.