I have a Sony Ericsson K790i?

I cant seem to make conference calls even though i use the join calls option?! How does one make a conference call using SE K790i?

Also i want to go for GPRS however i 'm looking for a economical plan..Which service provider in India provides economical rates for GPRS? Airtel,Idea,BSNL,Vodafone?

even i do have dat but u can make conference on it...maybe ur conference is not activated or after calling two parties u shud go in options nd there will a option for joing calls..try it...

i think AIRTEL is best