Screen is faded with multi colored streaks

That would most indicative of a hardware issue with your iPhone. Schedule an appointment at your Apple Store Genius Bar or Apple Authorized Service Provider for service options, which most likely means have the screen replaced on your iPhone.

You can use this link to schedule an appointment --> Genius Bar Reservation and Apple Support Options - Apple

Sorry, no shortcuts here.

Make an appointment at the Apple Store or take the phone to an authorized Apple Service shop. You can find authorized locations in your area by using the link just below:

https://locate.apple.com/