![Amazon.com: Samsung Galaxy S21 G991U 5G | T-Mobile GSM Unlocked | Android 5G Smartphone (Renewed) (128GB, Phantom Gray) : Cell Phones & Accessories Amazon.com: Samsung Galaxy S21 G991U 5G | T-Mobile GSM Unlocked | Android 5G Smartphone (Renewed) (128GB, Phantom Gray) : Cell Phones & Accessories](https://m.media-amazon.com/images/I/61S6frpjYqL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Samsung Galaxy S21 G991U 5G | T-Mobile GSM Unlocked | Android 5G Smartphone (Renewed) (128GB, Phantom Gray) : Cell Phones & Accessories
Android 12 update for the US Galaxy S21 models brings refresh rate bug, Samsung working on a fix - PhoneArena
![Samsung Says A Galaxy S21 120Hz Display Bug Is Affecting Many Users And Promises A Fix | HotHardware Samsung Says A Galaxy S21 120Hz Display Bug Is Affecting Many Users And Promises A Fix | HotHardware](https://images.hothardware.com/contentimages/newsitem/56868/content/16x9_2133x1200_highres-samsung-galaxy-s21-display-bug.jpg)