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Oppo Inno Day is a yearly conference where the Chinese company reveals its latest innovations. Last year's edition saw an under-display camera, and tomorrow we’re expecting a smartphone with 125W fast charging. The company is also going to introduce a concept device with a rollable display, according to an official post on Weibo. Oppo rollable display teaser The image does not reveal how the display rolls/retracts but looking at the image and how other companies like LG went with the solution, it is pretty obvious we’re looking at another groundbreaking technology for Oppo. Also,...