why have the apps disappeared on my home screen after up

Hi Hugoelmagno,

We'll be happy to help you out with your apps. As to why they aren't currently showing, we wouldn't be able to discern the cause of that. However, you can add them back to your Home Screen by following the steps outlined in Move apps and widgets on the Home Screen on iPhone - Apple Support

"Move apps and widgets around on your iPhone

1. Touch and hold any app or widget on the Home Screen, then tap Edit Home Screen.
2. The apps begin to jiggle.

Drag an app to one of the following locations:

• Another location on the same page
• Another Home Screen page
• Drag the app or widget to the right edge of the screen. You might need to wait a second for the new page to appear. The dots above the Dock show how many pages you have and which one you’re viewing.

3. When you’re finished, press the Home button (on an iPhone with a Home button) or tap Done (on other iPhone models)."

We hope this helps you out.

Cheers.