Never buy any sim cards from Uniconnect !! Not only their product is really bad, but so is their customer support. While i landed in London and tried to make the first call, my call never got connected despite 5 futile efforts. On calling their customer care number, they said it seems to be sim card issue which will take time to fix. Its been 5 days that i am still in London with no resolve. I have never experienced such poor services ever in my life !!