Galaxy S21 5G vs Galaxy S23 Ultra

The Galaxy S21 features a 6.2” display size, and the Galaxy S23 Ultra features a 6.8” display size. Overall, the Galaxy S21 is much smaller and lighter than the Galaxy S23 Ultra.

The Galaxy S21+ measures 5.97” (H) x 2.80” (W) x 0.31” (D) and weighs 6.0 ounces. In comparison, the measurements for the Galaxy S23 Ultra are as follows: 6.43” (H) x 3.07” (W) x 0.35” (D) with a weight of 8.2 ounces.

The Galaxy S21 features a 6.2-inch display and the Galaxy S23 Ultra features a 6.8-inch display, and both displays are Dynamic AMOLED 2X Infinity-O, HDR10+ certified, and able to support refresh rates up to 120Hz.

Details for the Galaxy S21 display include a resolution of 2400 x 1080 at 421 pixels per inch and an aspect ratio of 20:9. Details for the Galaxy S23 Ultra display include a resolution of 3088 x 1440 at 500 pixels per inch and an aspect ratio of 19.3:9. The Galaxy S23 Ultra also supports the Samsung S Pen.

The Galaxy S21 is powered by a 4000 mAh battery and the Galaxy S23 Ultra is powered by a 5000 mAh battery. Otherwise, the Galaxy S21 and the Galaxy S23 Ultra both support 25W fast wired charging, 15W standard wired charging, 15W Qi wireless charging, and 4.5W reverse wireless charging. The Galaxy S23 Ultra also supports 45W super fast wired charging.