How to connect Samsung Galaxy smartphones to external devices, how to connect them, and how to use them on connected devices

Connected devices
Achieve mobile continuity between your device and other connected devices.
Options may vary by service provider.
◌ From Settings, tap Connected devices for the following features:

• Quick Share: Allow anyone with a Samsung account to share files with your
  device.
• Music Share: Let nearby friends play music on your Bluetooth speaker.
• Auto switch Buds: Automatically switch your Galaxy Buds from another
  device to this device when you make a call, answer a call, or play media.
• Call & text on other devices: Make and answer calls and text messages from
  your Galaxy devices that are signed in to your Samsung account.
• Continue apps on other devices: Pick up where you left off on your Galaxy
  devices that are signed in to your Samsung account.
• Camera Share: Use the device’s camera as a webcam for a nearby tablet or
  Galaxy Book.
• Storage Share: Share access to your device storage.
• Link to Windows: Connect your device and Windows PC to get instant access
  to your device’s photos, messages and more.
• Multi control: Use the cursor and keyboard from your Galaxy Book to control
  this device and drag things back and forth.
• Samsung DeX: Connect your device to a PC or TV for an enhanced
  multitasking experience.
• Smart View: Show your device’s screen or play videos on a nearby TV.
• Galaxy Wearable: Connect your device to your Samsung watch and
  earbuds.
• SmartThings: Use your device to connect to an ecosystem of smarter living
  solutions.
• Android Auto: Connect your device and compatible car displays so that you
  can focus on driving.