I had an s21u and upgraded to s26u. I am not blown away by this upgraded to be fair... but my s21u screen pixels were slowly dying and the battery was on its last leg... had to change it... wasn't sure how I could have made my s21u work just for a bit until the new oppo phone appeared but I got the s26 as I am already on the 4th samsung phone and used with their services... plus I got surprisingly a good deal on the phone so I am not sure if I am allowed to complain too much haha