I have turned off automatic download of app updates. I open the App Store and press Update All. I realize it's going to take too long or I am on the wrong data connection. I just want to stop the update all command. For now, I don’t see any way to do so. I tried turning off Wi-Fi and data. That stops the download, but leaves all queued apps for the update in an unavailable state.
Is there a way to stop all or is it just racing and press stop on each queued app for update?
Currently, there is no one button way to cancel or stop all the updates started by pressing the "Update All" button, maybe in a future release of iOS we can have a Cancel All or Pause all. Submit your feeback to Apple, here.
The current solution is to manually stop updating each app that was started updating:
There is no mechanism to cancel all the running app updates in one go. However, if you are concerned about data, you can individually cancel the app updates. The following instructions apply to iPhone 6s/6s Plus and later (with 3D touch available).
Force touch the app icon for which an update is in progress.
In the Quick Action menu, you'll find the options to Cancel and Pause download.