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Xiaomi's got a foldable smartphone in the works since late last year but hasn't offered an update on its availability yet. More recently, two other patents for foldable phones have surfaced, one for a dual-hinge tri-section folding phone with three cameras, and another for a clamshell design like the new Moto Razr. On Tuesday, another patent was listed on China's CNIPA for a foldable phone with three sections and four cameras. Remember, just because a patent is filed by an OEM it doesn't mean the design will become a real product. The following mockup was posted by Dealntech...
Source: https://www.gsmarena.com/xiaomis_latest_patent_shows_a_foldable_phone_with_quadcameras-news-40190.php