title: Check Bluetooth status - Swift 4
body: <p>I have a problem with the Bluetooth in Xcode. I can’t find a great solution on how to check if Bluetooth is on or not. I want just that. I searched around the web some solution, but nothing works for me. Any idea on how to check Bluetooth? I imported the CoreBluetooth class and I made this line of code:</p>
  
  <pre><code>if CBPeripheralManager.authorizationStatus() == .denied { code }
  if CBPeripheralManager.authorizationStatus() == .authorized  { code }
  </code></pre>