hello all.now i was listening with nokia headphones (not 5530 one's)but iam sure it is not the problem.then i took of the headphones and i left the phone in my pocket.suddenly i saw the phone switched off.and it didnt want to operate.i thought maybe battery empty.despite its fully charged,i put the charger .nothing happen;.won't opperate.i removed the memory..nothing.what is that???!!! i NEED HELP>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>