Iphone App Icon Size. According to apple’s ios human interface guidelines, every app must provide an icon to be displayed on a device’s homescreen and in the app store.an app should specify several different icons of different dimensions to suit different screen sizes and different situations. You can find a comprehensive guide to the same at the link below. Launch image portrait (retina display) default.
Tap the plus icon in the top right corner. I find it a lot easier to launch apps this way, rather than having to move the icon towards the center of the display so that it is big enough to tap on it.
Search for the open app action and tap on it.
You should now see that the size of the app icons on the home screen are the same as the one in the center, which should make it a little easier to launch the apps. Once you get past 70, the icons become quite unwieldy, which significantly degrades the user experience. Tap the plus icon in the top right corner. Application icon icon for iphone: