SIM808 module GSM working fine, GPS not working (No GPS ready message on power on) I powered on my SIM808 module. It showed me following output: 

RDY  
+CFUN: 1  
+CPIN: READY  
Call Ready  
SMS Ready  


It supposed to show GPS ready also.

I sent AT command and return ok.
However AT+CGPSPWR=? returns error. All GPS command showed error.

I think GPS is not initialized at all as i didn't see GPS message when module powered on.

Why is the GPS not working?
You have a version2 module. Use AT+CGNSxxx instead of AT+CGPSxxx