How to Scroll an iPhone in VoiceOver
When you use your iPhone 5 under the default settings, you scroll the multi-touch display by dragging or flicking a single finger across the screen. When the VoiceOver feature is activated, you can no longer scroll with a single finger; instead you must use three fingers. The VoiceOver option is an accessibility feature for people with vision impairments. With VoiceOver activated, the iPhone speaks the names of the icons as you move your finger over them. To activate an icon, you touch it once to select it. VoiceOver announces what you’ve touched and then you double-tap the icon to activate it.
Scrolling in VoiceOver
Hold the iPhone in one hand with the display facing you.
Press three fingers together on your other hand.
Press and drag the three fingers together simultaneously across the iPhone’s multi-touch display to scroll.
Press the “Home” button on the iPhone. Touch the “Settings” icon to select it and then double-tap “Settings” to open it. Touch “General” to select it and double-tap “General.”
Drag three fingers upward on the screen to scroll until you see Accessibility. Touch “Accessibility” to select it and double-tap “Accessibility” to open it.
Touch “VoiceOver” to select it and double-tap “VoiceOver” to open the VoiceOver options screen. Touch the “VoiceOver” option to select it and double-tap the option to set the On/Off slider to the Off position. Tap “Accessibility” at the top of the display to go to the previous screen.
Scroll to the bottom of the Accessibility screen and select the "Accessibility Shortcut” option. Tap "VoiceOver" if you want to set the iPhone to toggle VoiceOver on and off whenever you press the Home button three times quickly. Press the “Home” button to return to the iPhone’s home screen.