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Telit GL868 SIMCARD not detected

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sp2012

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Hi guys,
I am using telit GL868 module.Here my simcard is not detected.

My checking procedure,

>>AT+SIMDET?
telit response as
>>ERROR

I checked SIMMVCC it always 0v only.

Telit module condition:
Telit supply voltage(VBATT,VBAT_PA(37,38 pins)) = 4.01V
PWRON pin(43) = 2.82V(power on mode)
AGND = ground.
Pin 5,6 = ground.
RX,TX = With voltage divider circuit and connect to micro controller

please tell me solution.
 

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