please refer to the attachment
Is there some1 out in the samsung wilderness who is able to explain this peculiar message in "the black box" which appears right after switching on the mobile.
All of the Applications working properly once initiated but right after leaving a Application, this lousy box pop's up again.
That would annoy me too !
Please put the phone into Safe Mode > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ which disables everything but the stock apps, just to see if it's one you've downloaded that's causing this.
This could be your theme too which Safe Mode will temporarily stop too,
Another option is to clear the cache and if needed the data part of your camera as I see that pop up mentions the camera.
Settings, Apps, Camera, Storage, Clear cache, Clear Data.
Another generic solution is to clear the phones system cache files which no user information is lost this way.
Clear your System File Cache vai the instructions in the Samsung Link. You may need to hook upto a computer or insert your headphones to get to the recovery menu. https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/
A very last resort would be a back up and factory reset before having to seek support at a Samsung Experience Store / Samsung Service Centre.
I wish you all the best with this situation.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help.
Just like to come back to my S3 problem.
The S3 unit finally went back to work i.e. by following the instruction shown on youtube video e.g.
"Samsung Galaxy S3 -How to perform a factory data reset"
"How to remove Factory Mode on Samsung Without Rooting"
thanx for your help & kind regards around