Changeable lens for iPhone?

A US patent application made public on Thursday hinted that Apple may be toying with the idea of letting picture-loving iPhone users change lenses for the smartphone cameras.
Apple's application for a "back panel for a portable electronic device with different camera lens options" included a diagram reminiscent of an opened iPhone with labeled parts.
The application described a design to let users change lenses that typically are fixed in the backs of smartphones to act as eyes for cameras.............
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