Well, there isn’t one right now. At this time, Samsung has only confirmed that the beta will be available in the US and South Korea, two markets which are always first in line. But we can look to past One UI betas from Samsung to get an idea of where else One UI 4.0 will be available for testing before its stable worldwide release.
One UI 4.0 beta program could launch in seven markets
In addition to the US and Korea, expect the One UI 4.0 beta program to launch in the United Kingdom, Poland, Germany, China and India. Samsung could expand availability to other markets this year, but for now that’s impossible to confirm. Thankfully, Samsung says the One UI 4.0 beta will start sometime this month, and we should get an official list of countries whenever the beta goes live.
You may also be wondering if the beta will come to devices other the Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra. That’s also something we can’t confirm right now, but the Android 11-based One UI 3.0 beta was made available for all of Samsung’s flagships for 2019 and 2020 (barring the original Galaxy Fold) and a few mid-range devices, so we can expect One UI 4.0 testing to happen on more than just the Galaxy S21 lineup, as well.