So hey people, just bought a new bsnl sim with 3g connection. And i'm from a pretty long time wondering whether it is a SIM or a USIM. I got no freakin about what USIM is about but i just read it about USIM over the bsnl website. So i need how to identify if i got a SIM or USIM. Btw i'm 0.25mbps dl. speed in bsnl network if this information help you. Before with my aircel network i got upto 3 mbps dl. speed. So i'm thinking whether i done everything right or i screwed something up while purchasing the sim. A fast reply will be helpful.