Samsung Galaxy S21 Ultra vs Galaxy S24 Ultra: Should you upgrade?

Display

Samsung Galaxy S21 Ultra

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6.8-inch Dynamic AMOLED
Curved WQHD+
3,200 x 1,440
Adaptive 120Hz refresh rate
HDR10+ certified

Samsung Galaxy S24 Ultra

6.8-inch Dynamix AMOLED 2X Display
3,120 x 1,440
Adaptive 120Hz refresh rate
HDR10+ certified

Processor

Samsung Galaxy S21 Ultra

Qualcomm Snapdragon 888 or Samsung Exynos 2100

Samsung Galaxy S24 Ultra

Qualcomm Snapdragon 8 Gen 3

RAM

Samsung Galaxy S21 Ultra

12 or 16GB

Samsung Galaxy S24 Ultra

12GB

Storage

Samsung Galaxy S21 Ultra

128, 256, or 512GB

Samsung Galaxy S24 Ultra

256GB, 512GB, or 1TB

Battery

Samsung Galaxy S21 Ultra

5,000mAh
25W wired charging
15W wireless charging
Reverse wireless charging

Samsung Galaxy S24 Ultra

5,000mAh
45W wired charging
15W wireless
Wireless PowerShare

Cameras

Samsung Galaxy S21 Ultra

Rear:
– Wide-angle: 108MP, ƒ/1.8, 0.8µm with OIS and phase-detection AF
– Telephoto: 10MP, ƒ/2.4, 1.22µm with OIS, dual-pixel AF, and 3x optical zoom
– Telephoto: 10MP, ƒ/4.9, 1.22µm with OIS, dual-pixel AF, and 10x optical zoom
– Ultra-wide: 12MP, ƒ/2.2, 1.4µm with dual-pixel AF and a 120-degree FoV
– Laser AF sensor

10x optical zoom
100x “Space Zoom”

Front:
– 40MP, ƒ/2.2, 0.7µm, with phase-detection AF

Samsung Galaxy S24 Ultra

Rear:
– Wide-angle: 200MP, ƒ/1.7, Super Quad Pixel AF, OIS
– Main telephoto: 50MP, ƒ/3.4, 5x optical zoom, Quad Pixel AF, OIS
– Second telephoto: 10MP, ƒ/2.4, 3x zoom, Dual Pixel AF, OIS
– Ultra-wide: 12MP, ƒ/2.2, Dual Pixel AF, 120-degree FoV

Laser AF
100x Space Zoom

Front:
– 12MP, ƒ/2.2, Dual Pixel AF

Connectivity

Samsung Galaxy S21 Ultra

4G LTE support
5G (sub-6GHz, SA and NSA, mmWave)
Wi-Fi 6E support
Bluetooth 5.2

Samsung Galaxy S24 Ultra

4G LTE
5G (incl. sub-6GHz TDD/FDD)
Wi-Fi 7
Bluetooth 5.3

S Pen support

Samsung Galaxy S21 Ultra

Yes

Samsung Galaxy S24 Ultra

Yes

Operating system

Samsung Galaxy S21 Ultra

One UI 3.1
Android 11

Samsung Galaxy S24 Ultra

One UI 6.1
Android 14

Water resistance

Samsung Galaxy S21 Ultra

IP68

Samsung Galaxy S24 Ultra

IP68

Security

Samsung Galaxy S21 Ultra

Ultrasonic fingerprint sensor, face unlock

Samsung Galaxy S24 Ultra

Ultrasonic fingerprint sensor, face unlock

Colors

Samsung Galaxy S21 Ultra

128 GB in Phantom Silver and Phantom Black

256 and 512GB in Phantom Black

Phantom Titanium, Phantom Navy, and Phantom Brown

Samsung Galaxy S24 Ultra

Titanium Black, Titanium Yellow, Titanium Violet, and Titanium Gray

Dimensions and weight

Samsung Galaxy S21 Ultra

75.6 x 165.1 x 8.9mm
229g

Samsung Galaxy S24 Ultra

79 x 162.3 x 8.6mm
232g

MicroSD

Samsung Galaxy S21 Ultra

No

Samsung Galaxy S24 Ultra

No

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