full pinout
| Pin | Name | Description | Direction |
|---|---|---|---|
| 1 | LOAD | Charging voltage | IN |
| 2 | BATTERY | Battery | OUT |
| 3 | DATA IN | Data received [S6, S8pin=2] | IN |
| 4 | ANTENNA | Antenna | - |
| 5 | ??? | - | |
| 6 | ??? | - | |
| 7 | MICG | Ground for microphone | IN |
| 8 | GND | Ground | - |
| 16 | GND | Ground | - |
| 15 | EARPHONE | Earphone | - |
| 14 | MIC | Microphone input. Some sources report this pin as TX!? | - |
| 13 | AUD | Loudspeaker | OUT |
| 12 | ??? | - | |
| 11 | DATA OUT | Data sent[S6, S8pin=15] | OUT |
| 10 | ??? | - | |
| 9 | ??? | - |
correct
incorrect