nexus s 4g flash to metro pcs texts work but calls dont help !!! please and thank you

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http://forum.xda-developers.com – ok so heres the problem i can text and receive texts but no calls it calls to verizon if i dial 611 and they say they cant route my call and im always roaming and if i take it off automatic set it to home only i get no signal whatsoever i flashed sprint nexus s 4g to metro pcs so i dont get it any help would me much appreciated im on jb 4.1.1 codname 3.6.0 rom heres what my status in settings under about phone says network : analog b signal strength : -96dbm 1 asu mobile network type : CDMA - 1xrtt:7 service state : in service roaming : roaming mobile network state : disconnected (HowTos)