i am using bsnl 2G sim cards to access internet on pc with different logos of bsnl . one is with BSNL MOBILE and second one is with logo CELLONE. when i use sim with BSNL MOBILE logo, when connected it shows speed of 460.0 Kbps on pc. when i use sim with CELLONE logo, when connected it shows speed of 115.0 Kbps. I want to know whether it is any SIM speciality or something is wrong with my settings. If anyone facing such situation please oblige with your inputs. thanks n regards.