iPhone User Guide
- Welcome
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- iPhone models compatible with iOS 18
- iPhone XR
- iPhone XS
- iPhone XS Max
- iPhone 11
- iPhone 11 Pro
- iPhone 11 Pro Max
- iPhone SE (2nd generation)
- iPhone 12 mini
- iPhone 12
- iPhone 12 Pro
- iPhone 12 Pro Max
- iPhone 13 mini
- iPhone 13
- iPhone 13 Pro
- iPhone 13 Pro Max
- iPhone SE (3rd generation)
- iPhone 14
- iPhone 14 Plus
- iPhone 14 Pro
- iPhone 14 Pro Max
- iPhone 15
- iPhone 15 Plus
- iPhone 15 Pro
- iPhone 15 Pro Max
- iPhone 16
- iPhone 16 Plus
- iPhone 16 Pro
- iPhone 16 Pro Max
- Setup basics
- Make your iPhone your own
- Take great photos and videos
- Keep in touch with friends and family
- Share features with your family
- Use iPhone for your daily routines
- Expert advice from Apple Support
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- What’s new in iOS 18
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- Adjust the volume
- Turn the iPhone flashlight on or off
- Silence iPhone
- Multitask with Picture in Picture
- Access features from the Lock Screen
- Use the Dynamic Island
- Perform quick actions
- Search on iPhone
- Get information about your iPhone
- Manage storage on iPhone
- View or change cellular data settings
- Travel with iPhone
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- Change sounds and vibrations
- Use and customize the Action button
- Create a custom Lock Screen
- Change the wallpaper
- Adjust the screen brightness and color balance
- Keep the iPhone display on longer
- Use StandBy
- Customize the text size and zoom setting
- Change the name of your iPhone
- Change the date and time
- Change the language and region
- Use and customize Control Center
- Change your default web browser or email app
- Rotate your iPhone screen
- Customize sharing options
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- Use the Camera Control
- Use the Camera Control to open another app
- Adjust the shutter volume
- Adjust HDR camera settings
- Record videos
- Take spatial photos and record spatial videos for Apple Vision Pro
- Change sound recording options on iPhone 16 models
- Record ProRes videos
- Record videos in Cinematic mode
- Change video recording settings
- Save camera settings
- Customize the Main and Fusion camera lens
- Change advanced camera settings
- View, share, and print photos
- Use Live Text
- Scan a QR code
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- Create and edit events in Calendar
- Send invitations
- Reply to invitations
- Change how you view events
- Search for events
- Change Calendar settings
- Schedule or display events in a different time zone
- Keep track of events
- Use multiple calendars
- Use reminders
- Use the Holidays calendar
- Share iCloud calendars
- Compass
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- Get started with FaceTime
- Create a FaceTime link
- Take a Live Photo
- Record and transcribe an audio call
- Turn on Live Captions in a FaceTime call
- Use other apps during a call
- Make a Group FaceTime call
- View participants in a grid
- Use SharePlay to watch, listen, and play together
- Share your screen in a FaceTime call
- Request or give remote control in a FaceTime call
- Collaborate on a document in FaceTime
- Use video conferencing features
- Hand off a FaceTime call to another Apple device
- Change the FaceTime video settings
- Change the FaceTime audio settings
- Change your appearance
- Leave a call or switch to Messages
- Block and silence FaceTime calls from unknown callers
- Report a call as spam
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- Get started with Freeform
- Create a Freeform board
- Draw or handwrite
- Solve handwritten math problems
- Add text in sticky notes, shapes, and text boxes
- Add shapes, lines, and arrows
- Add diagrams
- Add photos, videos, and other files
- Apply consistent styles
- Position items on a board
- Navigate and present scenes
- Send a copy or PDF
- Print a board
- Share boards and collaborate
- Search Freeform boards
- Delete and recover boards
- Change Freeform settings
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- Intro to Home
- Upgrade to the new Home architecture
- Set up accessories
- Control accessories
- Control your home using Siri
- Use Grid Forecast to plan your energy usage
- View electricity usage and rates
- Set up HomePod
- Control your home remotely
- Create and use scenes
- Use automations
- Set up security cameras
- Use Face Recognition
- Unlock your door with a home key
- Configure a router
- Invite others to control accessories
- Add more homes
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- View maps
- Explore 3D maps
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- Get travel directions
- Change or add stops to your route
- View a route overview or a list of turns
- Change settings for spoken directions
- Get driving directions
- Get directions to your parked car
- Set up electric vehicle routing
- Report traffic incidents
- Get walking directions
- Save walks or hikes
- Get transit directions
- Get cycling directions
- Get traffic and weather info
- Book rides
- Estimate travel time and ETA
- Download offline maps
- Look around places
- Take Flyover tours
- Clear location history
- Delete recent directions
- Choose a default travel mode and units
- Report an issue with Maps
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- Set up Messages
- About iMessage
- Send and reply to messages
- Text via satellite
- Send later
- Unsend and edit messages
- Keep track of messages
- Search
- Forward and share messages
- Group conversations
- Share screens
- Collaborate on projects
- Use iMessage apps
- Take and edit photos or videos
- Share photos, links, and more
- Send stickers
- Create and send Memoji
- React with Tapbacks
- Style and animate messages
- Draw and handwrite messages
- Send and save GIFs
- Request, send, and receive payments
- Send and receive audio messages
- Share your location
- Turn read receipts on or off
- Change notifications
- Block, filter, and report messages
- Delete messages and attachments
- Recover deleted messages
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- Get music
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- Play music
- Use the music player controls
- Use Siri to play music
- Play lossless audio
- Play Spatial Audio
- Listen to radio
- Play music together using SharePlay
- Play music together in the car
- Adjust the sound
- Queue up your music
- Shuffle or repeat songs
- Sing along with Apple Music
- Show song credits and lyrics
- Tell Apple Music what you enjoy
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- Get started with Notes
- Create and format notes
- Use Quick Notes
- Add drawings and handwriting
- Enter formulas and equations
- Add photos, video, and more
- Record and transcribe audio
- Scan text and documents
- Work with PDFs
- Add links
- Search notes
- Organize in folders
- Organize with tags
- Use Smart Folders
- Share and collaborate
- Export or print notes
- Lock notes
- Add or remove accounts
- Change the Notes view
- Change Notes settings
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- Use passwords
- Find your password for a website or app
- Change the password for a website or app
- Remove a password
- Recover a deleted password
- Create a password for a website or app
- Use passkeys to sign in to apps and websites
- Sign in with Apple
- Share passwords
- Automatically fill in strong passwords
- Change weak or compromised passwords
- View your passwords and related information
- Find and share your Wi-Fi password
- Share passwords securely with AirDrop
- Make your passwords available on all your devices
- Automatically fill in verification codes
- Automatically fill in SMS passcodes
- Sign in with fewer CAPTCHA challenges
- Use two-factor authentication
- Use security keys
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- Make a call
- Record and transcribe a call
- Change your Phone settings on iPhone
- View and delete the call history
- Answer or decline incoming calls
- While on a call
- Have a conference or three-way call on iPhone
- Set up voicemail
- Check voicemail
- Change voicemail greeting and settings
- Select ringtones and vibrations
- Make calls using Wi-Fi
- Set up call forwarding
- Set up call waiting
- Block or avoid unwanted calls
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- Get started with Photos
- View photos and videos
- See photo and video information
- Customize the Photos app
- Filter and sort the photo library
- Back up and sync your photos with iCloud
- Delete or hide photos and videos
- Search for photos and videos
- Get wallpaper suggestions
- Make stickers from your photos
- Duplicate and copy photos and videos
- Merge duplicate photos and videos
- Import and export photos and videos
- Print photos
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- Browse the web
- Search for websites
- See highlights
- Customize your Safari settings
- Change the layout
- Create multiple Safari profiles
- Use Siri to listen to a webpage
- Bookmark a website
- Save pages to a Reading List
- Find links shared with you
- Annotate and save a webpage as a PDF
- Automatically fill in forms
- Get extensions
- Clear your cache and cookies
- Enable cookies
- Shortcuts
- Tips
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- Get started with Apple Intelligence
- Use Writing Tools
- Use Apple Intelligence in Mail
- Use Apple Intelligence in Messages
- Use Apple Intelligence with Siri
- Get webpage summaries
- Get a summary of a phone call or audio recording
- Use Apple Intelligence in Photos
- Summarize notifications and reduce interruptions
- Apple Intelligence and privacy
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- Work across devices using Continuity
- Use your iPhone from your Mac
- Receive iPhone Notifications on your Mac
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Copy and paste between devices
- Stream video and audio from your iPhone
- Allow phone calls and text messages on your iPad and Mac
- Share your internet connection with Personal Hotspot
- Use iPhone as a webcam
- Insert sketches, photos, and scans on Mac
- Start SharePlay instantly
- Connect iPhone and your computer with a cable
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- Intro to CarPlay
- Connect to CarPlay
- Use Siri
- Use your vehicle’s built-in controls
- Get turn-by-turn directions
- Report traffic incidents
- Change the map view
- Make phone calls
- Play music
- View your calendar
- Send and receive text messages
- Announce incoming text messages
- Play podcasts
- Play audiobooks
- Listen to news stories
- Control your home
- Use other apps with CarPlay
- Rearrange icons on CarPlay Home
- Change settings in CarPlay
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- Get started with accessibility features
- Use accessibility features during setup
- Change Siri accessibility settings
- Quickly turn accessibility features on or off
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- Overview of accessibility features for vision
- Zoom in
- View a larger version of text you’re reading or typing
- Change display colors
- Make text easier to read
- Reduce onscreen motion
- Use iPhone more comfortably while riding in a vehicle
- Customize per-app visual settings
- Hear what’s on the screen or typed
- Hear audio descriptions
- Adjust CarPlay settings
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- Turn on and practice VoiceOver
- Change your VoiceOver settings
- Use VoiceOver gestures
- Operate iPhone when VoiceOver is on
- Control VoiceOver using the rotor
- Use the onscreen keyboard
- Write with your finger
- Keep the screen off
- Use VoiceOver with an external keyboard
- Use a braille display
- Type braille on the screen
- Customize gestures and keyboard shortcuts
- Use VoiceOver with a pointer device
- Get live descriptions of your surroundings
- Use VoiceOver in apps
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- Overview of accessibility features for mobility
- Use AssistiveTouch
- Adjust how iPhone responds to your touch
- Back tap
- Use Reachability
- Auto-answer calls
- Turn off vibration
- Change Face ID and attention settings
- Use Voice Control
- Use Voice Control commands with CarPlay
- Adjust the side or Home button
- Adjust Camera Control settings
- Use Apple TV Remote buttons
- Adjust pointer settings
- Adjust keyboard settings
- Control iPhone with an external keyboard
- Adjust AirPods settings
- Turn on Apple Watch Mirroring
- Control a nearby Apple device
- Control iPhone with the movement of your eyes
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- Overview of accessibility features for hearing
- Use hearing devices
- Use Live Listen
- Use sound recognition
- Set up and use RTT and TTY
- Flash the indicator light for notifications
- Adjust audio settings
- Play background sounds
- Display subtitles and captions
- Show transcriptions for Intercom messages
- Get live captions of spoken audio
- Play music as taps, textures, and more
- Get notified about car horns and sirens in CarPlay
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- Control what you share
- Turn on Lock Screen features
- Keep your Apple Account secure
- Create and manage Hide My Email addresses
- Protect your web browsing with iCloud Private Relay
- Use a private network address
- Use Advanced Data Protection
- Use Lockdown Mode
- Use Stolen Device Protection
- Receive warnings about sensitive content
- Use Contact Key Verification
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- Important safety information
- Important handling information
- Find more resources for software and service
- FCC compliance statement
- ISED Canada compliance statement
- Ultra Wideband information
- Class 1 Laser information
- Apple and the environment
- Disposal and recycling information
- Unauthorized modification of iOS
- Copyright
Solve math with Math Notes in Calculator on iPhone
You can solve mathematical expressions, create and use variables, or graph equations—for example, when learning new concepts in class, day-to-day budgeting, planning an event, home remodeling, and more.
Note: Math Notes uses common mathematical symbols, the same operations as the scientific calculator, and digits from select numeric systems. Learn more on the iOS and iPadOS Feature Availability website.
Solve expressions
Go to the Calculator app
on your iPhone.Tap
, then tap Math Notes.Tap to open a previous Math Note, or tap
to start a new one.Do any of the following:
Type a math expression, then include an equal sign.
Tap
, write a math expression horizontally, then include an equal sign.Tap
, write a stack of numbers, then draw a horizontal line below the numbers to add the numbers in the stack. Write a different symbol to the left of each digit if you want a different operation.
Tap the equal sign to see what Math Notes understood in what you wrote. To correct mistakes, you can fix any of the following:
Unrecognized math and unsolvable expressions: Tap any dotted red lines to see details about the error.
Ambiguous characters: Tap any dotted blue lines to clarify what you wrote.
See the Apple Support article How to handle errors in Math Notes to learn more.
Math Notes uses the standard order of operations in horizontal expressions. For example, multiplication is completed before addition and subtraction. Add parentheses around expressions that you want calculated first. In vertically stacked math, Math Notes evaluates expressions from top to bottom.
Math Notes automatically converts any units and currency used in expressions. You can also mix different systems—for example, 42 meters + 143 feet. Available units and currency match the Convert mode of the basic or scientific calculator. See Convert units or currency.
Update values
Go to the Calculator app
on your iPhone.Tap
, tap Math Notes, then tap the note you want to update.Do one of the following:
Erase the number, then enter a new value.
Tap the number, then slide left and right to adjust the value using the scrubber that appears above the number.
Any graphs using the values automatically update. If the value was assigned to a variable, results or graphs of any equations using the variable automatically update as well.
Use variables in expressions and equations
Go to the Calculator app
on your iPhone.Tap
, then tap Math Notes.Tap to open a Math Note, or tap
to start a new one.To declare a variable, type or write a letter or word to use as the variable, followed by an equal sign.
Type or write a value or expression after the equal sign to assign a value to the variable.
Type or write the variable name in an expression or an equation to use it.
Note: Math Notes reads entries from top left to bottom right. You must declare a variable (for example, x = 5) before using it in an expression (such as x + 10 =). Writing an expression without first declaring a variable produces an error. Variable names must contain characters only from the Latin alphabet. Variables can’t be used in vertical math.
You can use equations with two variables to create a graph.
Show results automatically or as suggestions
You can choose how you want your iPhone to respond to the math problems you enter in Math Notes.
Go to the Calculator app
on your iPhone.Tap
, then tap Math Notes.Tap
, then tap Math Results, then do one of the following:If you want problems to be solved: Choose Insert Results. Answers appear automatically when you type or write a solvable math problem.
If you want suggestions to appear: Choose Suggest Results. When you type or write an equal sign or select a solvable math problem, a Solve button appears that, when tapped, inserts the answer.
If you don’t want any math results: Choose Off. Answers don’t appear when you write or type an equal sign after an expression.