Instructions apply to devices running iOS 12 and higher.

If you do buy without meaning to, you could rack up a large bill from Apple.

TapScreen Time>Content & Privacy Restrictions.

Screen Time settings on an iPhone

Then, move theContent & Privacy Restrictionsslider toon/green.

Set a restrictionspasscode, which is a 4-digit code that locks these parameters.

If they know your passcode, they can re-enable in-app purchases.

Turn off in-app purchases on iPhone

Enter the passcode twice to set it.

TapiTunes & App Store Purchases>In-app Purchases>Don’t Allow.

As long as this setting is enabled, it’s impossible to make in-app purchases on this iPhone.

Screenshots of the App Store app, showing purchase history

Setting up an iPhone to use by your kids is about more than just turning off in-app purchases.

Learn all about it inHow to Set up an iPhone or iPod Touch for Kids.

Just stick to this:

Open theApp Storeapp and tap your photo or icon in the top right corner.

Turn off in-app purchases on iPhone

Tap [your name] at the top of the screen.

input your password, or authenticate usingTouch IDorFace ID, if prompted.

Scroll through the list of purchases.

Turn off in-app purchases on iPhone

In-app purchases are labeledIn-App Purchase.

Tap a purchase to get more information.

Under theAccountmenu, clickView My Accountand enter the password for your Apple Account.

In thePurchase Historysection, clickSee All.

Review the recent purchases for ones that look suspicious or unfamiliar.

But Apple has made the process easier.

To request a refund,follow the instructions on this Apple web page.

Apple discontinued the iTunes Allowance feature in 2016.