@matthewj41963 this "rubbed it and it spread like black ink." is a broken screen. Your phone uses AMOLED displays and when those break internally they leak what appears as ink. the only way to fix that is by replacing the screen.
Check these guides [guide|163999] for the replacement of those screens.
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Replacement screens are available. Do an online search to find a vendor that appeals to you.
@matthewj41963 this "rubbed it and it spread like black ink." is a broken screen. Your phone uses AMOLED displays and when those break internally they leak what appears as ink. the only way to fix that is by replacing the screen.
Check these guides [guide|163999] for the replacement of those screens.