Also, with Bluetooth, your iPhone or iPad can create a "Personal Hotspot" to provide Internet access for your Mac through your wireless service provider.
Since the upgrade to MacOS 12.0.1 Monterey Bluetooth is broken customer wide. Apple's new 13-inch MacBook Pro is the best MacBook for most people because of its fast performance, relatively affordable price, and good keyboard. I bought a bluetooth mouse (Logitech M337). Flash storage doesn't just give you a lighter, thinner computer.
Go to System Preferences and click the Bluetooth pane. Recently my bluetooth keyboard and trackpad have stopped working.