Ipad apps hang when updating
It doesn't matter what state the app is currently in; the system deletes it, along with all of it's data, and moves on without a moment's hesitation.
The app icon is the black placeholder image and when you tap it, nothing happens. When you download an app and this happens, it's frustrating. The easiest way to check this will be to open a web link in Safari.
You might need a Wi-Fi connection to update some apps on your i OS device.
Get help with unfamiliar charges and in-app purchases.
If you are not able to update app in your i Phone or there is no progress in the update, it is better to delete the app from i Tunes and start afresh. Connect your i Phone with i Tunes on Mac or Windows computer.
This comes as rather weird suggestion but sometimes it works.