Google around - 'iphone mobile device management'. There's a service that's free for a couple devices[1]. Apple also makes a (terrible) app called Configurator. There are a bunch of others, but most of them are designed for (and priced for) corporate use.

You need to learn a little about what you're doing if you want to go this route, and there is some setup. But basically, you're taking on the role of a corporate IT department, pre-configuring and possibly locking down the phone.

I set up a profile in Configurator a few years ago and am a little afraid of touching it - that application makes iTunes look thoughtfully designed and stable.

[1] https://www.jamf.com/products/jamf-now/