This is where things can get a bit confusing. Not all aftermarkets or premiums are the same. There are many diffrent grades of aftermarkets and we use the highest quality we can find the X04 . There are a few diffrent variations of premiums ours use original lcd, flex cables, digitizer, backlight, and 3D touch. We also install factory seals on LCD assembly per model. Below you can see diffrence's in better detail between China copy Aftermarket, X04 Aftermarket, and premium.