International Roaming STV for Singapore.data/ Data Charges Rs 0.5/MB.Free Voice/ Voice charges ~30 mins of International Roaming calls which include Outgoing local calls. calls back to India and Incoming Calls only.~Call back to India(Rs/min):- Rs 10.90/min.~Outgoing Local call (Rs/min):- Rs 4.6/min.~Outgoing International (Rs/min):-Rs 52.8/min.~Incoming call (Rs/min):- Rs 2/min.~Outgoing SMS (Rs/SMS):-Rs 2/SMS