Samsung Galaxy A51 vs Galaxy Note20 Ultra 5G

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

Samsung Galaxy A51Samsung Galaxy A51Exynos 9611Change
Samsung Galaxy Note20 Ultra 5GSamsung Galaxy Note20 Ultra 5GSnapdragon 865 5G+Change

Key differences

  1. Chipset: the Galaxy A51 uses the Exynos 9611 (10 nm), the Galaxy Note20 Ultra 5G the Snapdragon 865 5G+ (7 nm). The Galaxy A51's fastest core runs at 2.31 GHz, the Galaxy Note20 Ultra 5G's at 3.09 GHz.
  2. Screen: 6.5 inches on the Galaxy A51, 6.9 inches on the Galaxy Note20 Ultra 5G. Both run at up to 60 Hz.
  3. Battery: 3,890 mAh on the Galaxy A51, 4,370 mAh on the Galaxy Note20 Ultra 5G.
  4. Versions: owners have shared the Galaxy A51 as 6GB | 128GB, the Galaxy Note20 Ultra 5G as 12GB | 128GB and 12GB | 256GB.

The same on both: Android 13 with One UI 5.1, NFC and Widevine L1.

Chipset

Chipset
Exynos 9611Snapdragon 865 5G+
Process
10 nm7 nm
CPU
4× 2.31 GHz Cortex-A73
4× 1.74 GHz Cortex-A531× 3.09 GHz Kryo 585
3× 2.42 GHz Kryo 585
4× 1.80 GHz Kryo 585
Top CPU speed
2.31 GHz3.09 GHz
CPU cores
88
GPU
Mali-G72Adreno 650

Memory

Versions seen
6GB | 128GB12GB | 128GB
12GB | 256GB
RAM type
LPDDR4XLPDDR5

Display

Size
6.5 in6.9 in
Resolution
1080 × 24001440 × 3088
Pixel density
407 ppi496 ppi
Refresh rates
60 Hz60 Hz
HDR
—HDR10, HDR10+, HLG

Battery

Capacity
3,890 mAh4,370 mAh

Cameras

Back camera 1
12 MP4000 × 3000 · f/2 · 4.6 mm · OIS12 MP4000 × 3000 · f/1.8 · 7 mm · OIS
Back camera 2
12 MP4000 × 3000 · f/2.2 · 1.74 mm · OIS12 MP4000 × 3000 · f/2.2 · 2.2 mm
Front camera 1
8 MP3264 × 2448 · f/2.2 · 3.72 mm10 MP3648 × 2736 · f/2.2 · 3.3 mm
Front camera 2
5.2 MP2640 × 1980 · f/2.2 · 3.72 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

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

Software

Android
Android 13Android 13
UI
One UI 5.1One UI 5.1
Released with
Android 10Android 10
Widevine DRM
L1L1

Sensors

Sensors
35 sensors41 sensors
Galaxy A51 full specs Galaxy Note20 Ultra 5G full specs

See every detail of your own phone

Device Info is free on Google Play. Share your phone's report in two taps.

Get it on Google Play
From phones shared with the Device Info app · updated November 2026 Hardware specs only. No personal data. Privacy