Samsung Galaxy A33 5G vs Galaxy S21 5G

Specs compared side by side, measured on real phones shared by owners with the Device Info app.

Samsung Galaxy A33 5GSamsung Galaxy A33 5GExynos 1280Change
Samsung Galaxy S21 5GSamsung Galaxy S21 5GExynos 2100Change

Key differences

  1. Chipset: the Galaxy A33 5G uses the Exynos 1280 (5 nm Samsung), the Galaxy S21 5G the Exynos 2100 (5 nm Samsung). The Galaxy A33 5G's fastest core runs at 2.40 GHz, the Galaxy S21 5G's at 2.91 GHz.
  2. Screen: 6.4 inches on the Galaxy A33 5G, 6.2 inches on the Galaxy S21 5G. Up to 90 Hz on the Galaxy A33 5G, 120 Hz on the Galaxy S21 5G.
  3. Battery: 4,860 mAh on the Galaxy A33 5G, 3,880 mAh on the Galaxy S21 5G.
  4. Main camera: 12 MP on the Galaxy A33 5G, 12.2 MP on the Galaxy S21 5G.

The same on both: 8GB | 128GB versions, NFC and Widevine L1.

Chipset

Chipset
Exynos 1280Exynos 2100
Process
5 nm Samsung5 nm Samsung
CPU
2× 2.40 GHz Cortex-A78
6× 2.00 GHz Cortex-A551× 2.91 GHz Cortex-X1
3× 2.81 GHz Cortex-A78
4× 2.21 GHz Cortex-A55
Top CPU speed
2.40 GHz2.91 GHz
CPU cores
88
GPU
Mali-G68Mali-G78

Memory

Versions seen
8GB | 128GB8GB | 128GB
RAM type
LPDDR4XLPDDR5

Display

Size
6.4 in6.2 in
Resolution
1080 × 24001080 × 2400
Pixel density
411 ppi423 ppi
Refresh rates
90 Hz120 Hzalso 48, 60, 96
HDR
—HDR10, HDR10+, HLG

Battery

Capacity
4,860 mAh3,880 mAh

Cameras

Back camera 1
12 MP4000 × 3000 · f/1.8 · 4.65 mm · OIS12.2 MP4032 × 3024 · f/1.8 · 5.4 mm · OIS
Back camera 2
8 MP3264 × 2448 · f/2.2 · 1.42 mm12.2 MP4032 × 3024 · f/2.2 · 2.2 mm
Front camera 1
12.8 MP4128 × 3096 · f/2.2 · 3.39 mm10 MP3648 × 2736 · f/2.2 · 3.3 mm
Front camera 2
9.5 MP3712 × 2556 · f/2.2 · 3.39 mm7.1 MP3216 × 2208 · f/2.2 · 3.3 mm

Megapixels are what Android reports to apps. Many phones combine pixels by default, so the advertised megapixels can be higher.

Connectivity

Wi-Fi
—Wi-Fi 6
6 GHz Wi-Fi
NoNo
Bluetooth LE Audio
NoNo
NFC
YesYes
UWB
NoNo
USB host
YesYes

Software

Android
Android 16Android 15
UI
One UI 8.0One UI 7.0
Released with
Android 12Android 11
Widevine DRM
L1L1

Sensors

Sensors
35 sensors44 sensors
Galaxy A33 5G full specs Galaxy S21 5G full specs

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From phones shared with the Device Info app · updated October 2026 Hardware specs only. No personal data. Privacy