You can turn off color filters in Settings to turn your iPhone into a color screen. The operations are as follows: Tools\/Ingredients: iPhone 6S.
1. First find the Settings on our phone desktop and click on it.
2. Then find General and click on it.
3. Then click on Accessibility.
4. Then click Show Adjustment.
5. Then click the color filter.
6, finally click to turn off the color filter switch.