How often u wash ur handphone casing?? its being used everyday and sometimes we don;t have a choice but to use it even we know our hands are dirty.On hot days,it gets greasy upon contact with our face sebum etc etc.. for me i wash it once a week/everyweek end..together with the keypad oso..
sinicker
i dun wash....
i wipe wiv tissue and water every 4mths and i'll get a new crystal casing...