Foldable apparatus comprise a foldable substrate comprising a substrate thickness. The second major surface of the foldable substrate faces an end portion of a first inner surface area of a first housing member extending along a first plane. The second major surface faces an end portion of a second inner surface area of a second housing member extending along a second plane. A support is attached to at least the second housing member. The support contacts the second major surface when an angle between the first plane and the second plane ranges from about 80° to about 135°. The support is spaced from the second major surface when an angle between the first plane and the second plane ranges from about 0° to about 30°. In some embodiments, the foldable substrate comprises a neutral stress configuration at a parallel plate distance ranging from about 20 millimeters to about 200 millimeters.