If you can’t download or update any apps, including free apps, and you see a message about billing or payment, learn what to do.
If you want to update apps, you can update them manually or turn on automatic updates. But if your app won't update or is interrupted while it's downloading, try these steps:
Connect to Wi-Fi
If you’re using cellular data or Wi-Fi and have issues with an app, try to connect to another Wi-Fi network. Learn how to connect to Wi-Fi on your iOS or iPadOS device, on your Mac, or on your Apple Watch.
To check your Wi-Fi connection, try streaming a video from the Internet to see if it loads quickly. Or contact your Internet provider for more help.
Pause and restart the app download
Dec 06, 2018 iPhone X Won’t install Software Update, Apps and Won’t Download Apple TV Software Update Failed/Couldn’t Download The Update At a Time Slow Wi-Fi getting stuck downloading process: in this situation, your App or iOS updating job is really time-consuming and longer then you expect. To automatically install macOS updates, select “Automatically keep my Mac up to date.” To set advanced update options, click Advanced, then do any of the following: To have your Mac check for updates automatically, select “Check for updates.” To have your Mac download updates without asking, select “Download new updates when available.”.
When you firmly press the app from the Home screen, you might see options to Resume Download, Pause Download, or Cancel Download. If the app download is paused, tap Resume Download. If it's stuck, tap Pause Download, then firmly press the app again and tap Resume Download.
Restart your device
If the app appears on your Home screen but is dim or has a white grid with gray lines on it, don't delete the app. Restart your device, then go to the App Store and redownload the app. Learn how to restart your iOS or iPadOS device, Apple Watch, or Apple TV.
If you delete an app, you might lose the content associated with it.
Why Won't My Apple Watch App Update
Get more help
Why Won't My App Update On Mac
If you still have issues with apps on your device, contact Apple Support.