+-------------------------------------+ | [] [] [] [] [] [] [] [] [] [] [] [] | | 1 2 3 4 5 6 7 8 9 10 11 12 | +-------------------------------------+ (seen from bottom of phone when the phone keyboard is on top)
| Pin | Name | Description | Direction |
|---|
| 1 | GND | Ground | - | | 2 | SELF-SERVICE | Recognition/control battery charger | in/out | | 3 | LOAD | Charging voltage | in | | 4 | BATTERY | Battery (S25 only) | out | | 5 | DATA OUT | Data sent (S25 only) | out | | 6 | DATA IN | Data received (S25 only) | in | | 7 | Z_CLK | Recognition/control accessories | - | | 8 | Z_DATA | Recognition/control accessories | - | | 9 | MICG | Ground for microphone | - | | 10 | MIC | Microphone input | in | | 11 | AUD | Loudspeaker | out | | 12 | AUDG | Ground for external speaker | - |
|