I have a phone Wiko Minz on which no headset with a microphone did not fit: it was possible to listen to music, but not using the microphone. I tried a Nokia respectively WH-600 headset, Sennheiser Adidas PMX 685, Jabra Sport, a Yurbuds Adventure Line Explore Talk Sport and Uming. My friend also lent a JVC headphones. Without success. In the end, I learned that there are two standards for helmets and Jack sockets: the OMTP standard (one chosen by Wiko, Nokia, Sony ...) and CTIA standard (Samsung, Apple ...) that is now the most represented on the market. Depending on the selected standard, instead of the rings on the jack plug will not be the same (audio left and right audio, mass and micro for the CTIA standard, left audio, right audio, mic and mass for the OMTP standard). So I purchased this adapter and * miracle * I can now use without any problem the CTIA standard headphones with a microphone with my phone Wiko Minz. Amazing!