Apple building a phone which folds twice
By: Team Ifairer | Posted: 03-06-2019
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On its website, Patently Apple described what these multi-folding phones could look like: 'The flexible cover layer may be formed from a ceramic material (e.g., glass, strengthened glass, sapphire, zirconia) to provide some measure of protection for the flexible display from impact or other potential damaging contact.
'The flexible cover layer may also provide structural support for the display along both the folded and non-folded regions of the device. As used herein, a cover layer may also be referred to as a cover sheet or simply as a cover.'
'In general, a foldable electronic device can be folded to accommodate a variety of form factors. For example, a foldable electronic device may be used in an unfolded configuration to allow use of an entire display area.'
Source: dailymail