3.5mm headset: Accessory specification

Scope and location

The two ordered conductor schemes exchange microphone and ground while retaining the same nominal four-conductor plug form.

Mechanical table: four-conductor3.5mm plug, CTIA LRGM and OMTP LRMG; Reference headset test circuits introductory paragraph states MIC/GND exchange.

Open the original source

Inspected

2026-10-21

Access

public page

Recorded AI-assisted source inspection; not independent human approval or hardware testing.

Android accessory requirements only; not a list of supported devices, universal headset compatibility, switch-button compatibility or jack solder-lug layout. Diagram image files were not separately inspected; prose and mechanical table support these claims.

Source inspection is separate from independent technical approval, rights clearance and hardware testing.