12 pin cellphone special connector at the mobile phone
Pin Number
Pin Name
Direction
Description
8
RX
<--
9
TX
-->
12
GND
---
Xenium 9@9++pinout addon:
For data cable purposes connect pin 6 to GND. Phone write on LCD "PC connected".
Pin 9 has Open Collector schematic, need pull-up resistor 1.5-3KOhm to VDD.