Samsung Galaxy A51 (SM-A515F/DSM 128GB) vs Samsung Galaxy Note 20 Ultra 5G (SM-N986W 128GB)

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Side by side comparison between Samsung Galaxy A51 vs Samsung Galaxy Note 20 Ultra 5G phones, differences, pros, cons and full specifications. What's the better?

9/27/2020 12:12 AM, updated: 1/23/2023 9:26 AM

Compare Samsung Galaxy Note 20 Ultra 5G X Samsung Galaxy A51 (SM-A515F/DSM 128GB) 05Points

Specifications Compare Models Pictures

6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

29Points Samsung Galaxy Note 20 Ultra 5G (SM-N986W 128GB) Compare Samsung Galaxy A51 X

Specifications Compare Models Pictures

6.9"
AMOLED

1440x3088

108
MP

10mp

12GB
RAM

Octa-core

4500
mAh

(Non removable)

What's the better phone? Samsung Galaxy Note 20 Ultra 5G (SM-N986W 128GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

5 Advantages Samsung Galaxy A51 (SM-A515F/DSM 128GB)	vs	29 Advantages Samsung Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
+172 grams (6.02 ounces)21% Lighter	vs	208 grams (7.28 ounces)
+7.9 millimeters (0.31 inches)3% Thinner	vs	8.1 millimeters (0.32 inches)
+(front) 32MP2 times Higher resolution secondary camera to take pictures and selfies	vs	(front) 10MP
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
2.3GHz 64bit Octa-core (10nm)	vs	+3.09GHz 64bit Octa-core (7nm)43% More powerful processor, you can open your applications faster
6GB LPDDR4X	vs	+12GB LPDDR5100% More RAM memory. Typically more responsive and better for multitasking.
eMMC 5.1	vs	+UFS 3.0Advantage Fastest write and read storage.
Plastic body, glass front	vs	+Stainless steel body, glass front/backAdvantage More resistant material
Not supported	vs	+HDR10+Advantage The HDR10+ display provides vibrant colors and more details
60Hz	vs	+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
1080x2400 pixels	vs	+1440x3088 pixels72% Higher resolution screen
405 PPI	vs	+494 PPI22% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.5"	vs	+6.9"6% Larger screen
(quad camera) 48MP + 12MP + 5MP + 5MP	vs	+(triple camera) 108MP + 12MP + 12MP89% Higher resolution main camera
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
1/2" inches	vs	+1/1.33" inches50% The larger sensor camera lets you take photos with better depth.
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
4K UHD (3840x2160)	vs	+8K UHD (7680x4320)3 times More image quality for recording videos with the primary camera
4G LTE-A	vs	+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster
(4G LTE-A) 600 Mbps	vs	+(5G SA/NSA) 5000 Mbps7 times Faster for surfing the internet and download files
Not supported	vs	+BarometerAdvantage Sensors help you use the device
Virtual proximity sensor	vs	+Proximity sensorAdvantage Sensors help you use the device
Not supported	vs	+UWB (Ultra Wideband)Advantage Sensors help you use the device
4000 mAh	vs	+4500 mAh13% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
15W	vs	+25W67% More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
Not supported	vs	+Qi wireless charging (Qi/PMA)Advantage Wireless charging is another way to charge the battery.
802.11 a/b/g/n/ac [wifi5]	vs	+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
USB 2.0 Type-C, USB OTG On-The-Go	vs	+USB 3.2 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.
Not supported	vs	+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

28 Common items in both devices

128GB (107GB available) / 128GB (103GB available)

Until 1TB microSD, microSDXC

Super AMOLED / Dynamic AMOLED

16 million

LED flash

PDAF: phase detection autofocus / PDAF: phase detection autofocus on both cameras

HDR photo on both cameras / HDR photo/video on both cameras

+21 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Change model		Choose the model
Model	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Other model names	Samsung Galaxy A51 SM-A515F/DSM	Galaxy Note20 Ultra SM-N986W (Snapdragon)
Country or region available	Kazakhstan, Russia	Canada
Brand	Samsung	Samsung
Release date	12/16/2019, Announced: 12/12/2019	8/21/2020, Announced: 8/5/2020
Depth	7.9 millimeters (0.31 inches)	8.1 millimeters (0.32 inches)
Size (width x height)	73.6 x 158.5 millimeters (2.9 x 6.24 in)	77.2 x 164.8 millimeters (3.04 x 6.49 in)
Weight	172 grams (6.02 ounces)	208 grams (7.28 ounces)
Build, materials	Plastic body, glass front	Stainless steel body, glass front/back
Protection against water and others	Not supported	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Display type	Super AMOLED	Dynamic AMOLED
Screen size	6.5" inches	6.9" inches
Screen-to-body ratio	~87.4% (screen-to-body ratio)	~92.5% (screen-to-body ratio)
Display resolution	1080x2400 pixels (20:9)	1440x3088 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	405 PPI	494 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 3	Gorilla Glass Victus
Refresh rate	60Hz	120Hz
Display features	Always-On Display	1500nits[peak] HDR10+ Always-On Display 120Hz@FHD 60Hz@QHD
🤖 Operating System
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
System version	Android 10	Android 10
Firmware update	Android 13	Android 13
User Interface	One UI 2.5 / 3.1 / 4.1 / 5.0	One UI 2.5 / 3.1 / 4.1 / 5.0
⚙️ Processor
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Chipset	64bit: Samsung Exynos 9611 (10nm)	64bit: Qualcomm Snapdragon 865+ (SM8250-AB) (7nm)
CPU	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)	Octa-core, 3 processors: 1x 3.09GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core)
GPU graphical controller	ARM Mali-G72 MP3 (850MHz)	Qualcomm Adreno 650 (250-646MHz)
Performance (benchmark)	feature not registered	AnTuTu: 508760 (v8) Geekbench: 2603 (v5.1) GFXBench: 42fps (ES 3.1 onscreen)
💽 Memory and storage
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
RAM memory	6GB LPDDR4X	12GB LPDDR5
Internal storage	128GB (107GB available) eMMC 5.1	128GB (103GB available) UFS 3.0
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) nano-SIM (4FF)
Maximum Download / Upload	600/150 Mbps	5000/1024 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G, 5G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	CDMA 800, GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE	LTE Cat20 (2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 25, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46) VoLTE
Primary 5G network	Not supported	SA/NSA/Sub6 (41, 66, 71)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Back camera (main camera)	(quad camera) 48 megapixels 12MP ultrawide f/2.213mm1.12µm 5MP telephoto f/2.440mm 5MP depth f/2.21/5.0"1.12µm	(triple camera) 108 megapixels 12MP periscope telephoto f/3.0120mm1.0µmPDAFOIS5x-optical-zoom50x-hybrid-zoom 12MP ultrawide f/2.2120°13mm1/2.55"1.4µm
Main camera resolution	8000x6000 pixels	12000x9000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	8K UHD (7680x4320) 24 fps
Flash	LED flash	LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	26mm (lens)	26mm (lens)
Sensor size	1/2" inches	1/1.33" inches
Pixel size	0.8µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus on both cameras
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo on both cameras	HDR photo/video on both cameras
Camera extras	feature not registered	4K@60fps 1080p@240fps 720p@960fps
📸 Front camera
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Front camera (secondary)	32 megapixels	10 megapixels
Front camera resolution	6528x4896 pixels	3872x2592 pixels
Video recording (secondary)	4K UHD (3840x2160)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.2 (aperture)
Focal length	26mm (lens)	26mm (lens)
Sensor size	1/2.8" inches	1/3.2" inches
Pixel size	0.8µm pixel	1.22µm pixel
🔉 Sound and multimedia
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 3.2 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	Not supported	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Sensors	Accelerometer Ambient light sensor ANT+ Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Virtual proximity sensor	Accelerometer Ambient light sensor ANT+ Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband)
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	4000 mAh	4500 mAh
Charger, watts	15W Wired fast charging	25W Wired fast charging USB Power Delivery 3.0
Inductive / wireless charging	Not supported	15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Prism, Crush Black, White, Blue, Pink	• Colors: Mystic Black, Mystic Bronze, Mystic White • Ultrasonic fingerprint sensor • Bixby • Samsung Wireless DeX • Samsung Pay (MST, NFC) • Stylus pen (Bluetooth integration)
☢️ Radiation rate
	Galaxy A51 (SM-A515F/DSM 128GB)	Galaxy Note 20 Ultra 5G (SM-N986W 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.7W/kg (head), 1.26W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.369W/kg (head), 1.59W/kg (body)	feature not registered