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Samsung Galaxy S20 Ultra 5G (SM-G988B/DS) vs Samsung Galaxy A51 5G (SM-A516B/DS)

Side by side comparison between Samsung Galaxy S20 Ultra 5G vs Samsung Galaxy A51 5G phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy A51 5G XSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)27Points
Samsung Galaxy S20 Ultra 5G (SM-G988B/DS)
6.9"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
04PointsSamsung Galaxy A51 5G (SM-A516B/DS)Compare Samsung Galaxy S20 Ultra 5G X
Samsung Galaxy A51 5G (SM-A516B/DS)
6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

64bit Octa

4500
mAh

(Non removable)

What's the better phone? Samsung Galaxy S20 Ultra 5G (SM-G988B/DS)

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!

Galaxy S20 Ultra 5G (SM-G988B/DS)27 Advantages Samsung Galaxy S20 Ultra 5G (SM-G988B/DS)vsGalaxy A51 5G (SM-A516B/DS)4 Advantages Samsung Galaxy A51 5G (SM-A516B/DS)
+2.73Ghz 64bit Octa-Core28%
More powerful processor, you can open your applications faster
vs2.2Ghz 64bit Octa-Core
+12GB LPDDR5100%
More RAM memory. Typically more responsive and better for multitasking.
vs6GB LPDDR4X
+UFS 3.0Advantage
Fastest write and read storage.
vsUFS 2.1
+HDR10+Advantage
The HDR10+ display provides vibrant colors and more details
vsNot supported
+120Hz100%
The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
vs60Hz
+1440x3200 pixels78%
Higher resolution screen
vs1080x2400 pixels
+509 PPI26%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs405 PPI
+6.9"6%
Larger screen
vs6.5"
+(quad camera) 108MP + 48MP + 12MP + 0.3MP140%
Higher resolution main camera
vs(quad camera) 48MP + 12MP + 5MP + 5MP
+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
vsOnly digital zoom
+OIS: Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
vsEIS: Digital stabilization
+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
vsNot supported
+1/1.33" inches50%
The larger sensor camera lets you take photos with better depth.
vs1/2" inches
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+(front) 40MP25%
Higher resolution secondary camera to take pictures and selfies
vs(front) 32MP
+8K UHD (7680x4320)3 times
More image quality for recording videos with the primary camera
vs4K UHD (3840x2160)
+Android 11Advantage
Android 11 is newer and safer
vsAndroid 10
+(5G SA/NSA) 5000 Mbps150%
Faster for surfing the internet and download files
vs(5G SA/NSA) 2000 Mbps
+BarometerAdvantage
Sensors help you use the device
vsNot supported
+5000 mAh11%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs4500 mAh
+45W2 times
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.
vs15W
+Qi wireless charging (Qi/PMA)Advantage
Wireless charging is another way to charge the battery.
vsNot supported
+2 slots (Dual-SIM) + e-SIM (Eletronic)
(hybrid slot/shares the same microSD slot)Advantage
More SIM card slots. You can choose more carriers.
vs2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
+802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMOAdvantage
WiFi 802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO is newer and faster
vs802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
vsNot supported
+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
Newer and faster USB version for transferring photos, mp3 or data.
vsUSB 2.0 Type-C, USB OTG On-The-Go
+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsNot supported
222 grams (7.77 ounces)vs+187 grams (6.55 ounces)19%
Lighter
8.8 millimeters (0.35 inches)vs+8.7 millimeters (0.34 inches)1%
Thinner
Type-C reversible connectorvs+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supportedvs+FM (RDS)Advantage
The radio lets you listen to your songs and sports in general

30 Common items in both devices
128GB (104GB available) / 128GB (105GB available)
Until 1TB microSD, microSDXC
Aluminum frame, glass front/back / Aluminum body, glass front, plastic back
Dynamic AMOLED / Super AMOLED
16 million
LED flash
PDAF: phase detection autofocus on both cameras / PDAF: phase detection autofocus
+23 specs and more in the table below

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

Highlight differencesClear highlight
Physical featuresSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
ModelGalaxy S20 Ultra 5G (SM-G988B/DS)Galaxy A51 5G (SM-A516B/DS)
Other model namesGalaxy S20 Ultra 5G SM-G988B/Dual-Sim (Snapdragon, 12GB RAM)Galaxy A51 SM-A516B
Country or region available(Global, International)
(Global, International)
(Global, International)
(Global, International)
BrandSamsungSamsung
Release dateMarch, 2020April, 2020
Depth8.8 millimeters (0.35 inches)8.7 millimeters (0.34 inches)
Size (width x height)76 x 166.9 millimeters (2.99 x 6.57 in)73.6 x 158.9 millimeters (2.9 x 6.26 in)
Weight222 grams (7.77 ounces)187 grams (6.55 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsAluminum frame, glass front/backAluminum body, glass front, plastic back
Protection against water and othersIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistantNot supported
System (OS)Samsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Operating systemAndroid 10Android 10
Firmware updateAndroid 11feature not registered
HardwareSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Chipset64bit - Samsung Exynos 990 (7nm)64bit - Samsung Exynos 980 Octa (8nm)
CPU processorOcta-Core, 3 processors:
2.73Ghz Dual-Core Mongoose M5
2.5Ghz Dual-Core ARM Cortex-A76
2Ghz Quad-Core ARM Cortex-A55
Octa-Core, 2 processors:
2.2Ghz Dual-Core ARM Cortex-A77
1.8Ghz Hexa-Core ARM Cortex-A55
GPU graphical controllerARM Mali-G77 MP11ARM Mali-G76 MP5
RAM memory12GB LPDDR56GB LPDDR4X
Internal storage128GB (104GB available)
UFS 3.0
128GB (105GB available)
UFS 2.1
External storageUntil 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Until 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
DisplaySamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Display typeDynamic AMOLEDSuper AMOLED
Screen size6.9" inches6.5" inches
Screen-to-body ratio~90.6% (screen-to-body ratio)~87.2% (screen-to-body ratio)
Display resolution1440x3200 pixels (20:9)1080x2400 pixels (20:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)509 PPI405 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 6Gorilla Glass 3
Display features120Hz, HDR10+60Hz
Mobile networksSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Dual-SIMDual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
Dual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF) + e-SIM
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload5000/200 Mbps2000/200 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G, 5G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1900/2100
Primary 4G networkLTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66)
TD-LTE (38, 39, 40, 41)
VoLTE
LTE Cat12/13 (1, 3, 4, 5, 7, 8, 12, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkSA/NSA/Sub6 (1, 3, 5, 7, 8, 28, 40, 77, 78)SA/NSA/Sub6 (41, 78)
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
CameraSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Back camera (main camera)(quad camera)
108 megapixels
48MP periscope telephotof/3.5103mm1/2.0"0.8µmPDAFOIS4x-optical-zoom10x-hybrid-zoom
12MP ultrawidef/2.213mm1.4µmSuper-Steady-video
0.3MP TOF 3Df/1.0
(quad camera)
48 megapixels
12MP ultrawidef/2.213mm1.12µm
5MP telephotof/2.440mm
5MP depthf/2.21/5.0"1.12µm
Main camera resolution12000x9000 pixels8000x6000 pixels
Video recording (primary)8K UHD (7680x4320) 24 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.33" inches1/2" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocus on both camerasPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationOIS: Optical stabilizationEIS: Digital stabilization
ZoomDigital and optical zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedNot supported
HDRHDR photo/video on both camerasHDR photo on both cameras
2ª cameraSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Front camera (secondary)40 megapixels32 megapixels
Front camera resolution7296x5472 pixels6528x4896 pixels
Video recording (secondary)4K UHD (3840x2160)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.2 (aperture)
Focal length26mm lens26mm lens
Sensor sizefeature not registered1/2.8" inches
Pixel size0.7µm pixel0.8µm pixel
MultimediaSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
RadioNot supportedFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivitySamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
USBUSB 3.2 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
TV outputUSB Type-C (reversible)Not supported
Audio outputType-C reversible connector3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNASupportedNot supported
NFCSupportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Barometer
Gesture
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Other features- Colors: Cosmic Black, Cosmic Grey, Cloud White
- Ultrasonic fingerprint sensor
- One UI 2
- Always-on display
- 32-bit/384kHz audio
- Dolby Atmos/AKG sound
- Bixby
- Samsung DeX
- Samsung Pay (MST, NFC)
- WiFi direct, hotspot
- Colors: Prism Cube Black, Prism Cube White, Prism Cube Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
Power supplySamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 mAh4500 mAh
Charger, watts45W Fast battery charging
15W Qi wireless charging (Qi/PMA)
9W Reverse wireless charging between devices
USB Power Delivery 3.0
15W Fast battery charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy S20 Ultra 5G (SM-G988B/DS)Samsung Galaxy A51 5G (SM-A516B/DS)
SAR 1.6W/kg (USA, Mexico, etc.)0.74W/kg (head) | 1.12W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)0.66W/kg (head) | 1.557W/kg (body)0.496W/kg (head) | 1.555W/kg (body)
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