Chosen Solution
My iPhone 4S is a little battered and is quite smashed, but is still working near enough perfectly, maybe a little slow. But today the screen went crazy, the colours look inverted (but it hasn’t been inverted through the settings). Things I go on stay on the screen and take a while to fade away.
In the photo, that page of my phone only has one folder (the one in the top corner), yet the image of my other apps from the page before are still there after I had swiped across. PLEASE HELP!!
Check the connections from the lcd to the logic board for error, one slight misplace on either the backlight or LCD connector can cause display issues. In the event the connectors are perfectly set and there are no signs of debris or interference, soft reset the device. If after these few steps you are still experiencing issues, you may have a defective LCD.
Unless you have good engineer skills or basic wiring and tech knowledge of an iphone4s I would say bring it to a repair shop,
