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Samsung Galaxy S8 Plus (SM-G955U) vs Samsung Galaxy S20 Ultra (SM-G988B/DS)

Side by side comparison between Samsung Galaxy S8 Plus vs Samsung Galaxy S20 Ultra phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy S20 Ultra XSamsung Galaxy S8 Plus (SM-G955U)09Points
Samsung Galaxy S8 Plus (SM-G955U)
6.2"
AMOLED

1440x2960

12.2
MP

8mp

4GB
RAM

64bit Octa

3500
mAh

(Non removable)

vs
21PointsSamsung Galaxy S20 Ultra (SM-G988B/DS)Compare Samsung Galaxy S8 Plus X
Samsung Galaxy S20 Ultra (SM-G988B/DS)
6.9"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S20 Ultra (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 S8 Plus (SM-G955U)9 Advantages Samsung Galaxy S8 Plus (SM-G955U)vsGalaxy S20 Ultra (SM-G988B/DS)21 Advantages Samsung Galaxy S20 Ultra (SM-G988B/DS)
+173 grams (6.06 ounces)27%
Lighter
vs220 grams (7.7 ounces)
+8.1 millimeters (0.32 inches)9%
Thinner
vs8.8 millimeters (0.35 inches)
+531 PPI4%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs509 PPI
+f/1.7 (aperture)6%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/1.8 (aperture)
+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
vsType-C reversible connector
+Heart rateAdvantage
Sensors help you use the device
vsNot supported
+Iris scannerAdvantage
Sensors help you use the device
vsNot supported
+SpO2Advantage
Sensors help you use the device
vsNot supported
+FMAdvantage
The radio lets you listen to your songs and sports in general
vsNot supported
2.35GHz 64bit Octa-Corevs+2.73GHz 64bit Octa-Core9%
More powerful processor, you can open your applications faster
4GB LPDDR4vs+12GB LPDDR52 times
More RAM memory. Typically more responsive and better for multitasking.
64GB (51GB available)vs+128GB (104GB available)104%
More internal storage for applications and files
UFS 2.0vs+UFS 3.0Advantage
Fastest write and read storage.
HDR10vs+HDR10+Advantage
The HDR10+ display provides vibrant colors and more details
60Hzvs+120Hz100%
The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
1440x2960 pixelsvs+1440x3200 pixels8%
Higher resolution screen
6.2"vs+6.9"11%
Larger screen
(back) 12.2MPvs+(quad camera) 108MP + 48MP + 12MP + 0.3MP13 times
Higher resolution main camera
Only digital zoomvs+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
1/2.55" inchesvs+1/1.33" inches92%
The larger sensor camera lets you take photos with better depth.
(front) 8MPvs+(front) 40MP4 times
Higher resolution secondary camera to take pictures and selfies
4K UHD (3840x2160)vs+8K UHD (7680x4320)3 times
More image quality for recording videos with the primary camera
(front) 2K UHD (2560x1440)vs+(front) 4K UHD (3840x2160)125%
More image quality for recording videos with the secondary camera
Android 9.0 Pievs+Android 11Advantage
Android 11 is newer and safer
(4G+ LTE-A) 1024 Mbpsvs+(4G+ LTE-A) 2000 Mbps95%
Faster for surfing the internet and download files
3500 mAhvs+5000 mAh43%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
15Wvs+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.
1 slot (Single-SIM)
(dedicated slot)
vs+2 slots (Dual-SIM) + e-SIM (Eletronic)
(hybrid slot/shares the same microSD slot)Advantage
It's more advantageous to have more than one phone operator in the same device
802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMOvs+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
USB 3.1 Type-C, USB OTG On-The-Govs+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
Newer and faster USB version for transferring photos, mp3 or data.

34 Common items in both devices
Until 1TB microSD, microSDXC
Aluminum frame, glass front/back
Super AMOLED / Dynamic AMOLED
16 million
LED flash
PDAF on back camera and autofocus front camera / PDAF: phase detection autofocus on both cameras
OIS: Optical stabilization
+27 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

📱 Model features

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
ModelGalaxy S8 Plus (SM-G955U)Galaxy S20 Ultra (SM-G988B/DS)
Other model namesGalaxy S8+ G955U Unlocked (Snapdragon), Samsung Dream 2Galaxy S20 Ultra 4G-LTE SM-G988B/Dual-Sim (Exynos, 12GB RAM)
Country or region availableUSA
USA
(Global, International)
(Global, International)
BrandSamsungSamsung
Release date4/21/2017, Announced: 3/29/20173/15/2020, Announced: 2/11/2020
Depth8.1 millimeters (0.32 inches)8.8 millimeters (0.35 inches)
Size (width x height)73.4 x 160 millimeters (2.89 x 6.3 in)76 x 166.9 millimeters (2.99 x 6.57 in)
Weight173 grams (6.06 ounces)220 grams (7.7 ounces)
Build, materialsAluminum frame, glass front/backAluminum frame, glass front/back
Protection against water and othersIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistantIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant

🤖 Operating System

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
System versionAndroid 7.0 NougatAndroid 10
Firmware updateAndroid 9.0 PieAndroid 11
User Interfacefeature not registeredOne UI 2.5 / 3.1

⚙️ Processor

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Chipset64bit - Qualcomm Snapdragon 835 (MSM8998) (10nm)64bit - Samsung Exynos 990 (7nm)
CPUOcta-Core, 2 processors:
2.35GHz Quad-Core Kryo 280
1.9GHz Quad-Core Kryo 280
Octa-Core, 3 processors:
2.73GHz Dual-Core Mongoose M5
2.5GHz Dual-Core ARM Cortex-A76
2GHz Quad-Core ARM Cortex-A55
GPU graphical controllerQualcomm Adreno 540 (670-710MHz)ARM Mali-G77 MP11 (800MHz)
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
RAM memory4GB LPDDR412GB LPDDR5
Internal storage64GB (51GB available)
UFS 2.0
128GB (104GB available)
UFS 3.0
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)

📲 Display

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Display typeSuper AMOLEDDynamic AMOLED
Screen size6.2" inches6.9" inches
Screen-to-body ratio~83.1% (screen-to-body ratio)~90.6% (screen-to-body ratio)
Display resolution1440x2960 pixels (18.5:9)1440x3200 pixels (20:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch 10-points
Pixel density (dot pitch)531 PPI509 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 5Gorilla Glass 6
Display features60Hz
HDR10
120Hz
HDR10+
Always-On Display
120Hz@FHD
60Hz@QHD

📶 Mobile networks

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
SIM card1 slot (Single-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF) + e-SIM
Maximum download/upload1024/150 Mbps2000/316 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkCDMA 800/1900, GSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat16 (1, 2, 3, 4, 5, 7, 8, 12, 20, 28, 29, 30)
TD-LTE (38, 39, 40, 41)
LTE 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
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedUMTS 850/900/1700/1900/2100
Secondary 4G networkNot supportedLTE 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
Secondary data networkNot supportedGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A

📷 Camera

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Back camera (main camera)12.2 megapixels(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
Main camera resolution4032x3024 pixels12000x9000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps8K UHD (7680x4320) 24 fps
FlashLED flashLED flash
Focal aperturef/1.7 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2.55" inches1/1.33" inches
Pixel size1.4µm pixel0.8µm pixel
AutofocusPDAF on back camera and autofocus front cameraPDAF: phase detection autofocus on both cameras
Touch focusSupportedSupported
Image stabilizationOIS: Optical stabilizationOIS: Optical stabilization
ZoomOnly digital zoomDigital and optical zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedSupported
HDRHDR photo/video on both camerasHDR photo/video on both cameras
Camera extrasfeature not registered4K@60fps
1080p@240fps
720p@960fps

📸 Front camera

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Front camera (secondary)8 megapixels40 megapixels
Front camera resolution3264x2448 pixels7296x5472 pixels
Video recording (secondary)2K UHD (2560x1440)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/1.7 (aperture)f/2.2 (aperture)
Focal length25mm lens26mm lens
Sensor size1/3.6" inchesfeature not registered
Pixel size1.22µm pixel0.7µm pixel

🔉 Sound and multimedia

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
LoudspeakerSupportedStereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Active noise cancellation2 microphones or more2 microphones or more
RadioFMNot supported
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, DivX, XviDMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
USBUSB 3.1 Type-C, USB OTG On-The-GoUSB 3.2 Type-C, USB OTG On-The-Go
Audio output3.5mm jackType-C reversible connector
TV outputUSB Type-C (reversible)USB Type-C (reversible)
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
WiFi Direct, hotspot
802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO
WiFi Direct, hotspot
DLNASupportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedSupported
Infrared portNot supportedNot supported

🧭 Sensors

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
SensorsAccelerometer
Ambient Light sensor
ANT+
Barometer
Compass
Face unlock
Fingerprint sensor (rear-mounted)
Gyroscope
Hall effect
Heart rate
Iris scanner
Proximity sensor
SpO2
Accelerometer
Ambient Light sensor
ANT+
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gesture
Gyroscope
Hall effect
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Battery typeLi-Ion: Lithium-Ion (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity3500 mAh5000 mAh
Charger, watts15W (9V/1.67A) Fast battery charging
Qi wireless charging (Qi/PMA)
Quick Charge 2
45W Fast battery charging
15W Qi wireless charging (Qi/PMA)
9W Reverse wireless charging between devices
USB Power Delivery 3.0
Talk time autonomy34 hours (1.4 days)feature not registered
Standby343 hours (14.3 days)feature not registered

➕ Other features

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous- Colors: Black, Silver, Blue, Gold, Orchid Gray
- Samsung DeX (desktop experience)
- Curved edge screen
- Corning Gorilla Glass 5 back panel
- Samsung Gear VR compatible
- Samsung Pay
- 32bit/192kHz audio
- Colors: Cosmic Black, Cosmic Grey, Cloud White
- Ultrasonic fingerprint sensor
- Bixby
- Samsung DeX
- Samsung Pay (MST, NFC)

☢️ Radiation rate

Samsung Galaxy S8 Plus (SM-G955U)Samsung Galaxy S20 Ultra (SM-G988B/DS)
SAR 1.6W/kg (USA, Mexico, etc.)0.46W/kg (head), 1.01W/kg (body)0.74W/kg (head), 1.12W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registered0.319W/kg (head), 1.557W/kg (body)
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