First time when I bought tatadocomo cellular company sim card for internet browsing for my smasung mobile for 3 G network I cant get better result for that.
Many times of call drop problem and not good service provide by the tatadocomo service center.
Then I never suggest to my friends ti buy tatadocomo sim card for calling purpose.in sometimes 3 g network cant properly in home when I call to customer service they reply me thats your smasung mobile might be problematic have to repair first.