Instructions apply to all iOS devices.
confirm that the apps are truly missing, and not simplymoved to another screenorin a folder.
After upgrades to iOS, apps are sometimes moved to new folders.

Lifewire / Jo Zhou
How you turn them off depends on what version of the iOS you’re running.
How to Get Deleted Apps Back
Your apps could also be missing because they’ve been deleted.
Earlier versions of the iOS didn’t allow this.
You get these deleted apps back by reinstalling them.
This removes the jailbreak, but it’s the only way to get those apps back.
Why Do iPhone Apps Go Missing?
There are a number of possible reasons why an app has disappeared.
It could have been moved or deleted.
Go to yourAccountscreen and tapPurchasedto see a listing of the apps youve downloaded on your rig.
TapAllto see all your apps.
Locate the app you want to hide, swipe left, and tapHide.
Tap thesearch barto view apps alphabetically.
Find the hidden app you want to delete, tap it, and tapDelete App.