One of my family members bought BSNL EVDO MMX 300C HSIA Rev.A USB Modem. On the modem it says - CDMA2000 HSIA Modem. This piece of JUNK didn't work in my old house and we had no option but to close the connection.

I have moved to a new place in Baner, Pune. Near Pan Card Clubs. I am in urgent need of broadband connection. I would like to know if :

I can reuse the same modem for accessing other ISP services like Airtel GSM Sim, Reliance GSM sim, Aircel GSM sim, MTS GSM sim, Vodaphone GSM sim etc? Will I have to unlock it? I don't understand any of this. Just overheard.

Past experience from BSNL was really worst, would you recommend me to go back and check the speed of BSNL GSM sim again? I might end up spending few more hundred rupees in buying and activating GSM sim for no coverage.

all I want to know if I can reuse this modem and what would be the highest speed that I can get on this modem?

Thanks, Punite