Otherwise, ie, the hull has a metal part inside (which is used to maintain the magnetic snap (magnet).
This interferes with the metal part of Nokia compass. We must extract the phone holster to calibrate the compass (the famous movement 8), otherwise it's all bsimplement impossible.
Consider also that if you put a magnetic card or chip, a parking ticket or highway in the slots provided on the flap, you may find the demagnetized and unusable ...
If the model is practical and well protects the phone.
