Copy of my reply to a specific user further up with a few changes. Hope that this may help others:
We have been LG owners forever with no issues in this regard but decided to try Samsung. We looked at a Frame model but preferred the specs of an OLED model and since it was $1K off on sale we dug in. I had checked out how to display our own artwork/photos and it looked great so purchased it just before Christmas.
In setting it up we discovered that we couldn’t access our photos in Ambient Mode as we had been led to believe on either my iPad or iPhone so thought that Samsung required that it needed to be a Samsung device. I purchased a used A20 in late January after the busy Christmas holidays and lo and behold, same result. I contacted Samsung and after a lot of being escalated several times was told that they disabled the feature on OLED models because of burn-in concerns. This could have been addressed in software by using a bit-shift algorithm to jitter the photo around the screen - old technology that has existed since the days of CRTs fer Pete’s sake.
Anyhow, this is a feature that we wanted to use on occasion when we were entertaining so we went for a workaround. I copied two copies of the artwork to a thumb drive and plugged into the USB port on the TV and play them as a slideshow to prevent the screensaver (which I can’t disable) from starting after a few minutes. It then sorta worked but the TV turned off after 15 minutes even though Auto Off was disabled. Took me forever to discover that the TV was turning off because the attached Apple TV was set to sleep after 15 minutes of inactivity.
So now it works fine if you can ignore the little blip when it loads the next copy of the same artwork.
