if 3g is the requirement then why not get k810 i?buy the way 3g may be future proof,but it seems that the 3g call rates and data charges will be on the higher side,so better b contented with k790i,faboulous set,or else k810i, if budget increases further.BTW i do not like t series from sony,one of my friends used a t650i(dont know 4m where he got it,coz not officially launched in india),it is no good