F62 last update mobile display bagraund is green and flekaringSo what can I doSir told go to samsung careSamsung care told to change the displayDisplay cost 7000Pls help me sir

Please help

Dark mode is not working in Facebook

I can't open pdf files of dual WhatsApp in my gallexy F62. When I try to open any pdf file, the Office App shows " Can't open the file, Try saving the file on the device and then opening it". Also I can't find other filesimage, video etc. in the int...