Thanks...
Now i would like to explain it in detail. Maybe it will make you understand where i got it wrong.
1- I only grounded five ground pins out of 9.
2- I supplied 3.81V to VBAT through MIC29302.
3- Some AT commands were working properlyand voltage levels at all pins were normal but i didnt get any voltage on SIM_DATA, SIM_VDD, SIM_RESET, SIM_CLK when they were OPEN or CONNECTED as suggested in the manual.
4- I am making it on by grounding PWRKEY with a wire .i.e i am not supplying the pulse with MCU.
5- I am not getting RDY on Hyperterminal but i am receiving "IIII" when i ground PWRKEY with an external wire.
6- I got another SIM900D but the same problem with this module as well.
7- I have not connected SMF05C for ESD protection.
---------- Post added at 07:15 ---------- Previous post was at 07:00 ----------
8- When i shut it down by grounding it with a wire, i am getting "NORMAL SHUT DOWN"
---------- Post added at 07:29 ---------- Previous post was at 07:15 ----------
Is my module is in Charge Only Mode, in which few of the AT commands are working properly?