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my oneplus 7 screen becomes dull/discoloured sometimes

  1. Pranto47
    Cupcake Jul 16, 2020

    Pranto47 , Jul 16, 2020 :
    hey my oneplus 7 screen becomes discoloured sometime i mean the colour looks dull sometimes (it happened twice only)
    and when i lock the phone and unlock the screen becomes normal
    is it a screen issue or a bug
    please help
    I'm freaking out.
     

    #1