Hi, I would like an external lapel mic for my YouTube videos when outside. However I got a speedlink one on amazon with a 3.5mm jack, and while it fits and silences the speakers, the phone continues to use the on board mic. I have also tested this on my old Lumia 1020, and my brothers Lumia 640. Am I doing something wrong or have I bought the wrong mic, or are the phones even capable of having an external mic? Thanks in advance ☺