Question about confirming downloads from the App Store on iOS 11.2

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iOS & iPadOS

Just updated to IOS 11.2 on IPhone x. Just wondering if anyone else has updated, and if so, have you experienced any problems installing apps from the app store? When I click get for any app, I get an install button in the top right corner of my screen that says double tap to install. No jesture will activate this button as far as I can tell.

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Submitted by Chris on Saturday, December 2, 2017

lol, there is a graphic on the screen explaining that, but Apple forgot to either put in a hint, or text to say that... Thanks for the help!

Submitted by arvind on Sunday, December 3, 2017

Hello there,
I still dont get it,

Which button do i need to press again? And when i do i have to press it?i tried pressing the sleep/wake button but nothing happened,
And where is the image explaining this?
Thank you so much
Arvind