I had recharged Rs 440 for ULTD 15 days evdo topup. but it didnt convert to unlimited instead starting charging pay-per-use. I researched on internet how to activate and came across 53733. in this i had to send sms STV <PLAN MRP> to 53733. I sent sms as written there but i didnt get any reply. can anyone tell me the USSD codes to activate the plans (like *789*2000# for validity) or any other way to activate the plans ASAP (coz the sms one is not working)??? Been trying frantically for 3 weeks.......