Help To Adding SIM slot in Modem

[gurjeet_saini]

I have a usb modem , i think its postpay so no sim slot, is there any way / external circt which able to add a sim to it and disconect the other postpay cnection circuit

 

[kvtal]

which modem it was
and what was the schematic of it...
if u give this information it is possible to think how to connect to sim

 

[gurjeet_saini]

Its tata photon whiz , but no schematic bro

 

[kvtal]

u cannot add anything to it...