How do i do it for changing frequency to GSM

Below is displayed on typing mepd

Identity and Assiciations

Personalization:
Sim Disabled
Network Disabled
Network Subnet Disabled
Service provider Disabled
Corporate Disabled

I have tried it with three different SIM by other network provider but it displays the same ... Sim not valid

No it does not ask for any code

HI friend,

I have a non camera Blackberry 9930 sprint unlocked, my phone shows it is unlocked .
But my sim settings show: No valid Sim card after I got a new sim for same number from my carrier Airtel Mumbai.
After i inserted my new card my phone network has gone and " SOS " has come up at network place .
I had called my carrier customer service center but they say it my be phone issuie.
I had face similar problem a year back when i travelled to other country and changed sim card , when coming back i faces similar SIM issuie .
Please help as i can only use non camera phone at my work ans is only way to communicate.


BlackBerry 9930 non camera. Locked to Sprint

IMEI: 352016054329057
PRD: 39474-005

Unlock code suggested

3283329716547143

Thank you in advance for suggestions .

Hi, I've got the BlackBerry 9930 non camera. Locked to Sprint

IMEI: 352016.05.432905.7
PRD: 39474-005