A mobile electronic device comprising at least one part made of a polymer composition [composition (C), herein after] comprising at least one part made of a polymer composition [composition (C), herein after] comprising from at least one polyaryletherketone polymer [(PAEK) polymer], and at least one nitride (NI) of an element having an electronegativity (∈) of from 1.3 to 2.5, as defined in >, CRC Press, 64th edition, pages B-65 to B-158, based on the total weight of the composition (C).