not only s20. my s10, m series phone.. a hell lot of people are facing this issue. my screen gets yellowish bluish pinkish at the same time. my phone is not a phone anymore its has become a disco light.
We request you to kindly visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
