Xiaomi Mi 4i pinouts
The connector/pinout information may be applied to the Xiaomi (show all pinouts) model Mi 4i
Universal Apple-compatible CTIA Headset/Earphone 3.5mm Jack (LRGM) pinout for Samsung, HTC Hero, Blackberry and other cell phones with 3.5mm, 4 connection (4 "pin"), headset jack.