Important for Samsung users:
Test Gallery Labs for new features.
Steps to unlock Gallery Labs for every Samsung smartphone running on android 10 are:
1: Open gallery, tap 3 dots and then tap Settings.
2: Open About Gallery in Settings and then tap Version many times until it shows gallery labs unlocked.
3: Now come back and check gallery labs in settings.
Now you are eligible to test amazing new features of One UI 2.1 in gallery!