Samsung s2 1u pop-up settings

The small window of Samsung S2 1u is called a pop-up view, which can be moved and resized at will on the screen. You need to click Notification in Settings, click Advanced Settings, open the smart pop-up view in the floating notification, and then select the program that needs to pop up a small window, so that when there is any notification, you can pop up information through the small window or reply directly in the small window.