BSNL old sim APN trick for free BSNL 3G [SEPTEMBER 2013]

Hello guys.. 

Direct to the point.. 

You can get free 3G in your old BSNL sim just using special APN. 

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south user connect using 
Apn : 
gprssouth.cellone.in 

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north user connect using Apn : 
gprsnorth.cellone.in 
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working on 0 balance on old bsnl sim.