I always wondered why my 10$ external lapel microphone I bought for my GOPRO won’t work with my smartphone. The answer is that the ground and the Mic connectors are inverted between a microphone 3.5 mm male jack and a smartphone female 3.5 mm jack connector. This video shows step by step a diy (do it yourself) adapter to connect any microphone with a 3.5 mm jack to your smartphone. If you are too lazy you can still buy the MyMyk adapter for about 30 $.
List of tools :
- Lapel microphone: http://www.ebay.ca/itm/Deluxe-Lavalier-Lapel-Microphone-Clip-on-Omnidirectional-Condenser-Mic-for-Apple-/152202586564?hash=item236ffb29c4:g:ojMAAOSwU-pXrR-X
- MyMyk adapter: http://www.ebay.ca/itm/MyMyk-Connector-Cable-For-External-Mic-to-be-used-with-Smart-Phone-Tablet-/131836441011?hash=item1eb21071b3:g:gMYAAOSwQupXUUO6
- 3.5 mm Jack Femal Socket: http://www.digikey.ca/product-detail/en/cui-inc/SJ-43514-SMT-TR/CP-43514SJDKR-ND/1819833