Hello meizufans, I have a problem on my mx5. Last week I’m using the flyme os 5.1.6A but it can’t download a file from the browser or play store using a mobile data even I turn off the wifi download. Today I make a discussion to downgrade to flyme os 5.1.3A but it make me worst then before, it can’t open a camera, video, gallery even the play store. What should I do?😭