Quality: excellent workmanship. No signal loss.
Accuracy: this type of cable serves not only (as may think the title) to manage i-incompatibilities. It is useful only as part of a cable 4 son headphone + mic (headset only if no worries) as soon as one wishes to adapt a CTIA helmet (helmets marked all these iPhone-compatible) to a device intended for the OMTP standard or vice versa (which corresponds to the title in particular), as it is simply to reverse the son of the mass and the microphone. The majority of micro cabling helmets are effective on the CTIA standard (thanks to Apple and its proprietary approaches) while some still use smartphones (laudable but ultimately annoying resistance) the OMTP standard, "open" standard that has failed to win because of the brand marketing intelligence at Apple. ... And stupidity "panurgesque" market: it behaves as if iPhone was a de facto standard while Android Smartphones account for over 75% of the market (less than 20% for Apple)
