i have swopped P-A-Y-G sims cards in above phone . i have gone from 02 to T-mobile and next to the signal bars there is a blue box that has come up, What is it and i do i get rid of it? No its not bluetooth on,
it means you have a HSCSD data connection available to use for internet browsing if you wanted to (though it's only about as fast as a old style dial up connection on a land line).
You can't get rid of it, it's part of the info the phone gives you, a bit like battery level and signal strength