here are some tips try them if camera not working after one ui 2 update then it's a software problem not a hardware problem did your camera work before android 10 update be specific? then only this solution works because it's software based solution if it's hardware problem then only hardware change will help so let me know if your camera worked before android 10 or not this is solution https://thedroidguy.com/how-to-fix-your-samsung-galaxy-a6-2019-camera-thats-not-working-error-warnin...
