A method of optimizing the use of radio resources in the UTRAN 5,19 of a UMTS network 17, and comprising transferring information, relating to changes in the radio resources available to an application 27 at a UE 1,16 andor relating to changes in the radio resource demand of the application 27, between the application 27 and a radio resource handling entity of the UTRAN 5,19. Upon applying the composition between the component and the printed circuit board, the composition may be subjected to a magnetic field to align the magnetic material particles into a conductive path between the component and the underlying substrate. The method also receives each of the different pieces, each of the pieces having been read from its respective memory unit of the plurality of memory units.