the wing also opens the same way. if you look at the main page of the forum you can see all pics of the phones and how they open. there are supposed to be 3 versions on the p4550, but the all open the same way, with the only difference between the types being the amount of installed cameras....
Samsung Galaxy S4 - root
Samsung Galaxy Tab 7.0+ (GT-P6210) - root
HTC EVO 4g - root, s-off, deck 1.3 stable