эта подойдёт
keyboard down
connector 2x5
1 2 3 4 5
6 7 8 9 10

4: Box Tx/Phone Rx (RJ45 pin-2)
5: Box Rx/Phone Tx (RJ45 pin-3)
6: Gnd
====================
points near sim card
1 2 3 4 5
6 7 8 9

2: Gnd
3: Box Rx/Phone Tx (RJ45 pin-3)
4: Box Tx/Phone Rx (RJ45 pin-2)