Question:

How to fix my Samsung Galaxy phone's display when it shows everything in black and white?

Answer:

Check for Wind Down mode: Go to Settings > Digital Wellbeing & Parental Controls > Wind Down and disable it by turning off the switch next to "Turn on as scheduled".

Disable Accessibility options: Go to Settings > Accessibility > Visibility Enhancements > Color Adjustment and turn it off.

Turn off Night Mode: In Settings, go to Display and toggle off the "Night mode" option.

Change Power Saving mode: Go to Settings > Device Care > Battery > Power Mode and select either "Optimized" or "High Performance."