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macOS User Guide
- Work across devices using Continuity
- Use iPhone as a webcam
- Use iPhone with Desk View
- Stream audio and video with AirPlay
- Use one keyboard and mouse to control Mac and iPad
- Hand off between devices
- Unlock your Mac with Apple Watch
- Make and receive phone calls on your Mac
- Sync music, books, and more between devices
- What is Family Sharing?
- Set up Family Sharing
- Add a user or group
- Set up Screen Time for a child
- Share purchases with your family
- Watch and listen together with SharePlay
- Share a Photo Library
- Collaborate on projects
- Find content shared with you
- Find your family and friends
- Play games with your friends
- Resources for your Mac
- Resources for your Apple devices
If your Mac display is slow to reach full brightness
If your Mac display is slow to reach full brightness, try these solutions.
Give the display time to warm up.
Make sure the display brightness is not turned off. Press the increase brightness key to check or adjust the level of brightness.
Turn on the ambient light sensor so your Mac can automatically adjust brightness based on current ambient lighting conditions. Choose Apple menu > System Settings, click Displays in the sidebar (you may need to scroll down), then turn on “Automatically adjust brightness” or “Ambient light compensation” on the right.
These options appear only if your Mac has an ambient light sensor.
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