hello I am using the ec200u module USIM vdd does not output. I am sure the module is switched on when testing this.
Have you powered it up with powerkey? Is the SIM_DATA pin level normal?
Hii,
Is this circuit working or not, can you please help us?
It is suggested that you send the PDF files of the PCB and the schematic diagram to support@quectel.com; And describe your problem and request.