[Q] Do I have a problem with my screen ?

Hello everyone ! I need your help, i should know if i have a problem with my screen ? When i compare my M9's screen with my M8's screen , I find that whites are yellow on the M9

Look (on the first image the M9 is on the left and to the right on the other image)

So do you think it's a material problem ?

Attached Thumbnails

     

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