How to make a Windows phone ring when connected to headphone?

Do you want ringtone through speaker even if the earphone is plugged in your Windows Mobile?

Here is how you can do it.

You can turn it on by setting the Ringer On.

To do this
  1. Plug in your earphone
  2. Press volume up/down button
  3. Press the down arrow at the top right
  4. Select the ringer on. After selection, it should appear in your accent color. (See picture below)

If you set the Ringer off (see below pic) you will not hear ringtone on speaker but you will still hear it on the earphone.