Today is a big day for fans of firmware updates and Android 12 enthusiasts, as One UI 4.0 is leaving the beta program behind to roll out live for the Galaxy S21 series worldwide. The beta program began in mid-September for the Galaxy S21 lineup in select markets and consisted of a few waves. Samsung […] The post BREAKING: Galaxy S21 series One UI 4.0 update now rolling out globally! appeared first on SamMobile.