Not able to connect to the network and see GPS is working or not

Did you check “AT!GPSSATINFO?” ?
You might also need to check the following AT commands to see if it can get GPS fix:

AT!ENTERCND=“A710”
AT!GPSEND=0
AT!GPSSATINFO?
AT!GPSFIX=1,255,1000
AT!GPSSTATUS?
AT!GPSLOC?