Not sure about this pinout.
| Pin | Pin Name |
Description |
| 1 | GND | GROUND |
| 2 | N/A | |
| 3 | TX | RX FOR PHONE |
| 4 | RX | TX FOR PHONE. |
| 5 | VCC | POWER |

Not sure about this pinout.
| Pin | Pin Name |
Description |
| 1 | GND | GROUND |
| 2 | N/A | |
| 3 | TX | RX FOR PHONE |
| 4 | RX | TX FOR PHONE. |
| 5 | VCC | POWER |