Headset Notifier is a handy app to help you find out if your Android device supports wireless earbuds or not. It will also notify you when you plug in or unplug a pair of headphones. If the device doesn't support Bluetooth headphones or the headphones are not supported by the device, you'll be notified.

You can use the app as a simple indicator that your device has a mic or not. You can also set up a customised notification to show up on your lock screen. The app also allows you to automatically turn on your screen when you plug in a pair of headphones.