A Y21 / Y33s cell phone case in blue for on the road and at home With this Y21 / Y33s case your smartphone is not only protected from dust and scratches, the classic cover is also well received in any situation. Inside the Y21 / Y33s cell phone case your ID, driving license or bank card are well kept in the card slots. There is also room for a spare wallet or shopping list. This beautifully finished Y21 / Y33s case in blue has a rounded magnetic closure with which the phone case can be easily opened and closed.