Its real simple to clone a cell, just get the code for your current cell that allows u to change the serial number, for the nokia 3390 its omthing to the effect of *#9270259#, theres a menu that pops up when u send that that lets u change stuff like manufactured date and such along with teh serial number, just get somone elses number and put it in were yours is, the cell phone companys bill according to serial number so depending what number u got in there youll have somone elses plan and they will get billed, i think thats what your lookin for