S20 camera warning issue

[Bartels14]

I have tried all of the tricks and tips to get your camera working but every time it opens it says camera warning failed . I really need a fix for this as soon as possible any advice?

[SamsungUser69]

I would try either factory reseting the phone, or you might have to try trading it in and/or taking it to your local phone carrier store.

[user149533at39]

A Factory Reset is a pretty extreme solution - only a last resort

[user149533at39]

Open Settings app

Choose Apps

Choose Camera

Choose Force Stop lower right

Choose Storage then Clear Cache and Clear Data at bottom

retry camera app

[JA98]

This solution does not work

[Samsung_Moderator]

I am very sorry to hear clearing the cache on the Camera app did not work. If your phone is displaying a "Camera Failed" message, freezing, lagging, or the preview is not working, the good news is that it's most likely a software issue and not a physical problem with the camera. Give these steps a try: https://www.samsung.com/us/support/troubleshooting/TSG01001329/

Please let me know if this helps. 

[Who_Dis]

you can also submit error report to samsung members app after reproducing the issue. 
Samsung Members app > Get help > Error Report (report <30min of occurrence, 1 issue per ticket).

Also, it may be a hardware issue where the module(s) failed and need replacing. 

visit an authorized repair center for a check up