Open the App Store and sign in
Manually update the app
In the App Store, try to update the app manually.
Check your payment method
You might need to have a payment method on file, even if the app that you want to download is free. See what payment method you have on file and make sure that it isn't expired, declined, or failed.
If you can't update apps and you see a message that says “your account is disabled in the App Store”, there might be a problem with your payment method. Contact Apple Support for assistance.
Pause the download, then restart it
When you touch and hold 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 touch and hold the app again and tap Resume Download.
Restart your device
If you still can't download or update apps on your iPhone or iPad, contact Apple Support.