Customers have had mixed experiences with the Samsung Galaxy S21 Ultra 5G, with some reporting issues with reliability and signal strength, while others have praised the quality of the pictures and the speed of the phone. Many customers have also noted the amazing camera capabilities, with some even taking detailed photos of the bight sky and the moon. Despite being an older phone, customers have found the Galaxy S21 Ultra 5G to be a great purchase, with many customers still using it two years after they bought it.