https://us.community.samsung.com/t5/Fold-Flip-Phones/Z-Fold-4-Fast-charging-issues/m-p/2365891#M13521 No 4 OS up dates to Android 16 and 5 years of security updates. Wed, 31 Aug 2022 23:32:04 GMT Bigeyefish1979 2022-08-31T23:32:04Z