12 pin Nokia 3250 cell phone special connector at the mobile phone (under the back cover)
This page documents the proprietary 12-pin internal connector, located under the back cover, used by third-party data and synchronisation cables for the Nokia 3250 handset. The connector layout is specific to this model and differs from connectors used on other Nokia families. Only the pins used by the cable are listed below.
| Pin | Signal | Description |
|---|---|---|
| 5 | GND | |
| 6 | F-bus Rx | |
| 7 | MBUS | |
| 8 | F-bus Tx | |
| 9 | Vpp | |
| A | Vbat+ | |
| B | BSI | |
| C | GND |
Notes
Pin numbers refer to the connector on the handset; pins not listed are unused by the cable.
References
- Nokia 3250/3250b Service Manual (RM-38/RM-40) — System Module / System Connector — Nokia Corporation.