Reliance was starting to feel stagnated in CDMA, therefore a move to GSM, also CDMA has very few reputed handset manufacturers. So highend customers preferred to move to GSM for advanced features.
It's this problem that has prompted Reliance to move to GSM
In the testing phase reliance gave it's employees sets, which were returned after bills were highly inflated and there were gross discrepancies in the bill.
So better watch for the bill at the end of the month