1 You will find two tabs to select: 2  If you select Standard, this will allow your home screen to switch between landscape and portrait modes. 3  If this is want you want, tap Standard. 4  If you select Zoomed, this will turn off landscape switching, but everything on your iPhone Plus screen will appear just a bit bigger. Tap Display & Brightness. 2  In the list of settings, look for Display Zoom. 3  Under that heading, you should see View. 4  Tap it. 5  You will find two tabs to select: 6  If you select Standard, this will allow your home screen to switch between landscape and portrait modes.