Theorysonic. It was released in March 2018 with the cost of EK $3,000. It is the world's first foldable smartphone with tablet features to release available in public. It has 8.0” screen, with 5.0” cover.TheoryPhone FZ is a foldable smartphone created by
Development of TheoryPhone FZ was started in 2014 after the release of TheoryPhone X5.
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