Ever since I received the phone, I didn't believe that the quality was up to standard. My sister has exactly the same phone and her screen quality camera quality signal is so much better than mine. 

My colors on the camera are all dull and seem in a gray scale, everything is slightly pixelated. My brightness isn't great. I have also compared it with another colleague at work who has the same phone and his phone is a lot better quality as well. 

I have tried restoring the phone, resetting it back to factory settings. I have tried altering and unaltering camera settings but nothing seems to work. I have used all updates and this hasn't resolved anything either