Quality QT-818 cant connect. Help please
 

Hi,
I connect RX TX GND and Vbat on a pcb pinouts but cant connected :confused:
Can help me with this model plz ?

This is the phone:
Quality Technology Industrial Co.,Ltd

Many thanks

hello!

first of all you must make sure that this phone is MT62xx CPU based.
next, there is general rule about connecting to test points: phone's TX must be connected with box's RX, and otherwise RX with box's TX. Dont forget about GND wire and fully charged battery attached