I had got a chance to use the blue dart service, but that was the worst experiance I have ever got.i had to return my defeacted phone to amazon.they didn’t pick up my phone in time . even I have complained a lot but they didn’t do it .they took 15 days to pick up my phone .when I complained they told we will slove you problem shortly , but they didn’t do anything .that was my first and last experiance from blue dart and and am not going to further use that service .i don’t know what ohters think about this sevice but am totaly unhappy about this service