NOKIA 5300 Unlocked still no network Coverage

I bought T-Mobile in Chicago USA , but now I want to use my mobile in INDIA.I had called the T-Mobile customer care today. They gave me the unlock code for my mobile nokia 5300.I entered the unlock code and it said " sim was not restricted " instead of "sim 'is' not restricted".
Does this mean that my mobile was already unlocked. I remember I tried it once in USA also after asking T-Mobile customer care, but still it is showing no network coverage??
Please suggest what shall I do so that I get network coverage in INDIA.Is there any setting changes I need to do in my mobile??
Mobile
Make and Model : nokia 5300
EMIE no. is : 354567012196689

 

Your phone-GSM 900/1800/1900,must work in India.Try other sim.

 

ried with other sim also but still no network coverage?? do I need to change some settings of my mobile?? how r u so sure that it should work with other sims??

 

I think,all must be automatically.What the sim do you try?

 

I tried two different BSNL sim. Do I have to ask BSNL also to allow network coverage?? Please help .I am looking for a solution for last 1 month.

 

BSNL-900,must work.Try to ask BSNL,whats problem.

 

ok m talking to bsnl customer care. dont go away without helping me out to a solution. plz bro..

 

What do you mean?

 

i badly need ur help . i asking bsnl if they can help me in this.plz suggest anything you feel can help me.

 

Only BSNL can help you,not me.And verify-all is OK with your pnone.See also settings.

 

I have talked to BSNL customer care. they say they cant do anything to help in this. they asked me to contact nokia service center for this.

 

See-
http://www.bsnl.in/