Sources:
Grzegorz Sosna (kabelek@geocities.com)Mariano Lozano (lozano10@terra.es) Rear View of Nokia 3210 Cellular Phone
| Pin | Signal |
|---|
| 1 | VPP | | 2 | RX (FBUS) | | 3 | DATA (MBUS) | | 4 | GND - Ground | | 5 | TX (FBUS) | | 6 | BTEMP |
 Nokia 3210 Connector (keypad is up)
| Pin | Signal | Description |
|---|
| 1 | +V | +3.7V DC - 355mA | | 2 | ? | ? | | 3 | GND | Ground |
A Connector A connector - 2 pins 3.5mm
| Pin | Signal | Description |
|---|
| 1 | +V | +3.7V DC - 355mA | | 2 | GND | Ground |
B Connector B connector - 4 pins 3.5mm
| Pin | Signal | Description |
|---|
| 1 | Mic IN | Microphone Input - 1KOhm or 1.5KOhm, 0Ohm when HANG UP button is pressed | | 2 | Audio OUT | Audio Out | | 3 | Mic GND | Microphone Ground | | 4 | Audio GND | Audio Ground |
|