App updates on iOS seem very smooth on the whole, but there are times when you may have a whole bunch of updates to carry out, but there's that one app you need to use in a hurry, and it's grayed out because it's in the update queue.
And every other app is being updated first, leaving the one you want unusable.
But there's a way to prioritize an app to download next or even cancel the other downloads.
In the screenshot below, I've got a whole bunch of apps updating. Almost three dozen of them. Let's say there's one that I really need to use in a hurry (in this case, the YouTube app). This has been grayed out for many minutes as iOS goes through the list of apps to update.
There is a way to take control. However, as is the case with a lot of stuff on iOS, this is hidden away, and unless you know where it is, the chances of you coming across it by accident is low.