Use VoiceOver in apps on iPhone
You can use VoiceOver to interact with apps such as Maps, Camera, Photos, Voice Memos, Safari, and more even if you can’t see the screen.
Make and receive calls in Phone using VoiceOver
Use VoiceOver to make and receive phone calls.
Answer or end a call: Double-tap the screen with two fingers.
When a phone call is established with VoiceOver on, the screen displays the numeric keypad by default, instead of showing call options.
Display call options: Select the Hide Keypad button in the lower-right corner, then double-tap.
Display the numeric keypad again: Select the Keypad button near the center of the screen, then double-tap.
Read PDF documents in Apple Books or Files using VoiceOver
VoiceOver can read detailed information—such as forms, tables, and lists—in PDF documents.
Browse the web in Safari using VoiceOver
Search the web: Select the search field, double-tap to invoke the keyboard, enter your search, then swipe right or left to move down or up the list of suggested search phrases. Then double-tap the screen to search the web using the selected phrase.
Skip to the next page element of a particular type: Set the rotor to the element type—such as headings, links, and form controls—then swipe up or down.
Set the rotor settings for web browsing: Go to Settings
> Accessibility > VoiceOver > Rotor. Tap to select or deselect settings, or drag 
up or down to reposition an item.Skip images while navigating: Go to Settings > Accessibility > VoiceOver > Navigate Images. You can choose to skip all images or only those without descriptions.
Reduce page clutter for easier reading and navigation: Select the Reader item in the Safari address field (not available for all webpages).
Allow websites to customize their behavior for assistive technologies: Go to Settings > Accessibility > VoiceOver > Web, then turn on Accessibility Events. This setting may reveal whether an assistive technology is active on your iPhone.
Tip: If you pair Magic Keyboard with iPhone, you can use single-key Quick Nav commands to navigate webpages.
Read math equations using VoiceOver
VoiceOver can read math equations on the web (encoded using MathML) and in supported Apple apps such as Numbers and Keynote.
Hear an equation: Have VoiceOver read the text as usual. VoiceOver says “math” before it starts reading an equation.
Explore the equation: Double-tap the selected equation to display it in full screen and move through it one element at a time. Swipe left or right to read elements of the equation. Use the rotor to select Symbols, Small Expressions, Medium Expressions, or Large Expressions, then swipe up or down to hear the next element of that size. You can continue to double-tap the selected element to “drill down” into the equation to focus on the selected element, then swipe left or right, or up or down, to read one part at a time.
Equations spoken by VoiceOver can also be output to a braille device using Nemeth code, as well as the codes used by Unified English Braille, British English, French, and Greek. See Use a braille display with VoiceOver on iPhone.
Navigate in Maps with VoiceOver
In the Maps app, you can use VoiceOver to explore a region, browse points of interest, follow roads, zoom in or out, select a pin, or get information about a location.
Control how the map tracks your current location: Double-tap
until you hear the tracking option you want:Tracking on: The map automatically centers on your current location.
Tracking on with heading: The map automatically centers on your current location and rotates so that the heading you’re facing is at the top of the screen. In this mode, iPhone speaks street names and points of interest as you approach them.
Tracking off: The map doesn’t automatically center on your current location.
Explore the map: Drag your finger around the screen, or swipe left or right to move to another item.
Zoom in or out: Select the map, set the rotor to Zoom, then swipe down or up with one finger.
Pan the map: Swipe with three fingers.
Browse visible points of interest: Set the rotor to Points of Interest, then swipe up or down with one finger.
Follow a road: Hold your finger down on the road, wait until you hear “pause to follow,” then move your finger along the road while listening to the guide tone. The pitch increases when you stray from the road.
Select a pin: Touch a pin, or swipe left or right to select the pin.
Get information about a location: With a pin selected, double-tap to display the information flag. Swipe left or right to select the More Info button, then double-tap to display the information page.
Use Camera, Photos, and Voice Memos with VoiceOver
Use VoiceOver gestures to take and edit Camera videos and Voice Memo recordings.
Pause or continue a recording: Double-tap the screen with two fingers.
Trim a video: While viewing a video in Photos, double-tap the screen to display the video controls, then select the beginning or end of the trim tool. Then swipe up to drag to the right, or swipe down to drag to the left. VoiceOver announces the amount of time the current position will trim from the recording. To complete the trim, select Trim, then double-tap.
Trim a voice memo: Select the memo in Voice Memos, tap Edit, then tap Start Trimming. Select the beginning or end of the selection, double-tap and hold, then drag to adjust. VoiceOver announces the amount of time the current position will trim from the recording. Tap Play to preview the trimmed recording. When you’ve got it the way you want it, tap Trim.