I have the mumbi Car charger for Samsung S5230 ordered (equal to 2 piece, also for my sister). Both devices do not work! If the charger is connected, the display shows a rotating circle and appears below: "Connected" and the icon "PC" is also displayed, the charge indicator blinks as if loaded, actually is not loaded! The phone is completely blocked in the meantime, it does not respond to button. Either the pin assignment is not suitable for the Samsung S5230 or there is any other defect before, also the USB plug is too wide and has on one side where the cap is attached, be somewhat curtailed. Since I have changed the charging cable so I can not return it ... but at least the damage 4.90 x 2 is limited. The cable is for the birds!