these are either spice and escotel circle which idea acquired.
so vi fear losing loyal customer and it seems that 2g network equipment comes to end of life.
this is good sign at least in all Category A circle and few regions of B circle defiantly there is need of 3+1 telco which will fulfil demand.
rest of vi's loss making circle c should be shutdown or merge with bsnl to avoid multiple 2 network