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Samsung Galaxy A51 SM-A515F/DS Dual SIM 4GB RAM 128GB vs. Samsung Galaxy Note 20 Ultra SM-N986B/DS 5G Dual SIM 12GB RAM 256GB
Built-in camera
Yes
Yes
Front camera
Yes
Yes
Effective pixels front camera
32 megapixels
10 megapixels
Number of front cameras
1 ​
1 ​
Camera features
Autofocus, Built-in flash/lamp, Electronic image stabilization (EIS)
Autofocus, Built-in flash/lamp, Optical image stabilization (OIS), Electronic image stabilization (EIS), Optical zoom
Effective pixels
48 megapixels
108 megapixels
Maximum lens aperture
2
1.8
Number of rear cameras
4 ​
3 ​
Sensor format
1/2"
1/1,33"
Video recording
Yes
Yes
Max frame rate (highest resolution)
Max frame rate (regardless of res.)
240 fps
960 fps
Max resolution (highest frame rate)
1920x1080 (HD 1080) pixels
1280x720 (HD 720) pixels
Maximum resolution (video)
3840x2160 (4K Ultra HD) pixels
7680x4320 (8K Ultra HD) pixels
2G (GSM)
Yes
Yes
3G (UMTS)
Yes
Yes
HSPA+
Yes
Yes
4G (LTE)
Yes
Yes
4G: Speed (down/up)
Cat.20/18: 2000/200 Mbit/s
5G (NR)
No
Yes
Frequency range (5G)
FR1 (Sub-6 GHz)
Bluetooth
Yes
Yes
Bluetooth codec
SBC
aptX, aptX HD, LDAC, SBC
Bluetooth profile
A2DP, AVRCP
A2DP, AVRCP, OPP, HFP, HSP, PBAP
Bluetooth version
5.0
5.0
Built-in navigation system
Yes
Yes
Type of navigation system
GPS, A-GPS, BeiDou, Galileo, GLONASS
GPS, A-GPS, BeiDou, Galileo, GLONASS
NFC
Yes
Yes
Wireless network (Wi-Fi)
Yes
Yes
Wireless networking standard
802.11a, 802.11b, 802.11g, 802.11n (Wi-Fi 4), 802.11ac (Wi-Fi 5)
802.11a, 802.11b, 802.11g, 802.11n (Wi-Fi 4), 802.11ac (Wi-Fi 5), 802.11ax (Wi-Fi 6)
Data connector
USB
USB
Type of USB connector
USB (Type C)
USB (Type C)
USB On-The-Go (OTG)
Yes
Yes
USB version
2.0
3 (Gen 1)
Headphone output (2.5/3.5 mm)
Yes
No
Type of connection
3.5 mm
Colour
Black, Silver, Blue, White, Green, Grey, Pink
Black, White, Grey, Brown, Beige, Bronze
Developed especially for seniors
No
No
Physical keyboard/numpad
No
No
Dimensions (WxHxD)
Depth
7.9 mm
8.1 mm
Height
158.5 mm
164.8 mm
Width
73.6 mm
77.2 mm
Product weight
172 g
208 g
Built-in sensors
Proximity sensor, Accelerometer, Gyroscope
Proximity sensor, Accelerometer, Gyroscope, Barometer
Built-in wireless charging
No
Yes
Wireless standard
QI, PMA
Dual SIM card support
Yes
Yes
Hybrid Dual Sim
Yes
Type of Dual SIM
Dual SIM cards
Nano SIM/eSIM, Dual SIM cards
Features
FM radio, Shock resistant, ANT+
ANT+, Stylus pen support (Active Digitizer), Built-in stereo speakers
Security
Fingerprint reader, Face scanner
Fingerprint reader, Face scanner
SIM card
Nano sim
Nano sim
Supports fast charging
Yes
Yes
Water resistant
No
Yes
IP code (level of dust/water resistance)
IP68
Series
Galaxy A51
Samsung Galaxy Note 20
Aspect ratio
20:9
19.3:9
Display features
Scratch resistant display
Scratch resistant display, HDR, 120Hz refresh rate
Display technology
AMOLED
AMOLED
Display
Colour
Colour
Number of colours
16 777 216 colours
16 777 216 colours
Pixel density
405 PPI
496 PPI
Screen resolution (HxV)
1080x2400 pixels
1440x3088 pixels
Screen size
6.5 inches
6.9 inches
Touchscreen
Yes
Yes
Material (body/chassis)
Glass, Plastic
Glass, Aluminium
RAM size
4GB
12GB
Keyword
Release year
2019
2020
Battery capacity
4000 mAh
4500 mAh
Exchangeable battery
No
No
Graphics processor (GPU)
Yes
Yes
Graphics processor type
ARM Mali-G72 MP3
ARM Mali-G77 MP11
Processor core type
8 (Octa) Core
8 (Octa) Core
Processor speed
2.3 GHz
2.7 GHz
SoC/CPU (System on Chip)
Samsung Exynos 9 Octa (9611)
Samsung Exynos 990
Support for alternative firmware
Memory card reader
Yes
Yes
Compatible memory cards
microSD, microSDHC, microSDXC
microSD, microSDHC, microSDXC
Maximum memory card size
512GB
1TB
Storage space
128 GB
256 GB