Oppo has revealed it would be showing off its foldable smartphone at Mobile World Congress in 2019, Tweakers reports. In June, Gizmochina reported that Oppo patented a number of foldable smartphone designs including one that folded out to thrice the size of its original display screen. Oppo is not alone in the game though. In April, we reported that Samsung’s foldable ‘Galaxy F’ smartphone, with its self-claimed Infinity Flex display, is expected to launch next March at around $1,770. Similarly, Huawei CEO, Richard Yu, confirmed last month the company is working on its own foldable phone slated to launch in 2019.…

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