If your phone is in color one minute and black-and-white the next, there could be a temporary issue with the OS or an app. A simple restart could bring color back to your phone.

Source: trustedreviews 6. Update Your Phone’s Software It is important to note that outdated software can lead to unexpected issues, including a black-and-white screen.

Your old phone is worth less than the cost to fix the screen. Apple will charge you $129 to replace the 4.1-inch screen on the iPhone 5s, which debuted in 2013.

I tried setting my phone to black and white for 2 weeks to see if it helped reduce my screen time. Here's how it went (and if I would do it again).