Hardware pinouts information and cables schemes

Siemens ST55 cell phone pinout

connector or cable wiring scheme

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PinPin
Name
Description
1,2   connected in cable?
3 audio pair with pin 15
4 V+ charge 4,5,6 joined (checked)
9 RX Rx may be at pin 10
14 TX Tx may be at pin 15
15 audio pair with pin3
16,17,18 GND 16,17,18 connected (checked)

The charging pins are correct and checked, with a self made charger


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Pinouts.ru > O-W (Panasonic, Samsung,...) cell phones connectors pinouts listing >  Pinout of Siemens ST55 cell phone and layout of 18 pin unspecified cell phone special connector
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