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Samsung Galaxy S20 Ultra (SM-G988B/DS) vs Samsung Galaxy S21 Ultra (SM-G998U1 128GB)

Side by side comparison between Samsung Galaxy S20 Ultra vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy S21 Ultra XSamsung Galaxy S20 Ultra (SM-G988B/DS)06Points
Samsung Galaxy S20 Ultra (SM-G988B/DS)
6.9"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
07PointsSamsung Galaxy S21 Ultra (SM-G998U1 128GB)Compare Samsung Galaxy S20 Ultra X
Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
6.8"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 Ultra (SM-G998U1 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!


49 Common items in both devices
12GB LPDDR5
128GB (104GB available) / 128GB (101GB available)
Aluminum frame, glass front/back
Dynamic AMOLED
HDR10+
120Hz
16 million
+42 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 S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
ModelGalaxy S20 Ultra (SM-G988B/DS)Galaxy S21 Ultra (SM-G998U1 128GB)
Other model namesGalaxy S20 Ultra 4G-LTE SM-G988B/Dual-Sim (Exynos, 12GB RAM)Galaxy S21 Ultra 5G (SM-G998U1) Unlocked
Country or region available(Global, International)
(Global, International)
USA
USA
BrandSamsungSamsung
Release date3/15/2020, Announced: 2/11/20201/29/2021, Announced: 1/14/2021
Depth8.8 millimeters (0.35 inches)8.9 millimeters (0.35 inches)
Size (width x height)76 x 166.9 millimeters (2.99 x 6.57 in)75.6 x 165.1 millimeters (2.98 x 6.5 in)
Weight220 grams (7.7 ounces)227 grams (7.95 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 S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
System versionAndroid 10Android 11
Firmware updateAndroid 12Android 12
User InterfaceOne UI 2.5 / 3.1 / 4.0One UI 3.1 / 4.0

⚙️ Processor

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
Chipset64bit - Samsung Exynos 990 (7nm)64bit - Qualcomm Snapdragon 888 (SM8350) (5nm)
CPUOcta-Core, 3 processors:
2.73GHz Dual-Core Mongoose M5
2.5GHz Dual-Core ARM Cortex-A76
2GHz Quad-Core ARM Cortex-A55
Octa-Core, 3 processors:
2.84GHz Single-Core Kryo 680
2.42GHz Triple-Core Kryo 680
1.8GHz Quad-Core Kryo 680
GPU graphical controllerARM Mali-G77 MP11 (800MHz)Qualcomm Adreno 660 (840MHz)
Performance (benchmark)feature not registeredAnTuTu: 681099 (v8), 809165 (v9)
Geekbench: 3539 (v5.2)
GFXBench: 54fps (ES 3.1 onscreen)

💽 Memory and storage

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
RAM memory12GB LPDDR512GB LPDDR5
Internal storage128GB (104GB available)
UFS 3.0
128GB (101GB available)
UFS 3.1
External storageUntil 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Not supported

📲 Display

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
Display typeDynamic AMOLEDDynamic AMOLED
Screen size6.9" inches6.8" inches
Screen-to-body ratio~90.6% (screen-to-body ratio)~89.4% (screen-to-body ratio)
Display resolution1440x3200 pixels (20:9)1440x3200 pixels (20:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch 10-points
Pixel density (dot pitch)509 PPI516 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 6Gorilla Glass Victus
Refresh rate120Hz120Hz
Display featuresHDR10+
Always-On Display
120Hz@FHD
60Hz@QHD
1500nits[peak]
HDR10+
Always-On Display

📶 Mobile networks

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
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
SIM card2 slots (Dual-SIM)
nano-SIM (4FF) + e-SIM
1 slot (Single-SIM)
nano-SIM (4FF) + e-SIM
Maximum download/upload2000/316 Mbps5000/1920 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G, 5G
Frequency, bandsExpand band detailsCollapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100CDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
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 Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71)
TD-LTE (38, 39, 40, 41, 46, 48)
VoLTE
Primary 5G networkNot supportedSA/NSA/Sub6 (2, 5, 25, 41, 66, 71)
mmWave (260, 261)
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA, 5G NR
Secondary 2G networkGSM 850/900/1800/1900CDMA 800/1900, GSM 850/900/1800/1900
Secondary 3G networkUMTS 850/900/1700/1900/2100CDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
Secondary 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 Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71)
TD-LTE (38, 39, 40, 41, 46, 48)
VoLTE
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA, 5G NR

📷 Camera

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
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)
108 megapixels
10MP periscope telephotof/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom
10MP telephotof/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom
12MP ultrawidef/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video
Main camera resolution12000x9000 pixels12000x9000 pixels
Video recording (primary)8K UHD (7680x4320) 24 fps8K UHD (7680x4320) 24 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.33" inches1/1.33" inches
Pixel size0.8µm pixel1.8µm pixel
AutofocusPDAF: phase detection autofocus on both camerasPDAF: phase detection autofocus on both cameras
Touch focusSupportedSupported
Image stabilizationOIS: Optical stabilizationOIS: Optical stabilization
ZoomDigital and optical 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 extras4K@60fps
1080p@240fps
720p@960fps
4K@60fps
1080p@240fps
720p@960fps

📸 Front camera

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
Front camera (secondary)40 megapixels40 megapixels
Front camera resolution7296x5472 pixels7296x5472 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 pixel0.7µm pixel

🔉 Sound and multimedia

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
LoudspeakerStereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Stereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Active noise cancellation2 microphones or more2 microphones or more
RadioNot supportedFM
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

🔌 Connectivity

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
USBUSB 3.2 Type-C, USB OTG On-The-GoUSB 3.2 Type-C, USB OTG On-The-Go
Audio outputType-C reversible connectorType-C reversible connector
TV outputUSB Type-C (reversible)USB Type-C (reversible)
Bluetooth5.0 + A2DP/LE5.2 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax wifi6 (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 S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
SensorsAccelerometer
Ambient Light sensor
ANT+
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gesture
Gyroscope
Hall effect
Proximity sensor
Accelerometer
Ambient Light sensor
ANT+
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gesture
Gyroscope
Hall effect
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
Battery typeLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 mAh5000 mAh
Charger, watts45W Fast battery charging
15W Qi wireless charging (Qi/PMA)
9W Reverse wireless charging between devices
USB Power Delivery 3.0
25W Fast battery charging
15W Qi wireless charging (Qi/PMA)
4.5W Reverse wireless charging between devices
USB Power Delivery 3.0
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered

➕ Other features

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
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: Cosmic Black, Cosmic Grey, Cloud White
- Ultrasonic fingerprint sensor
- Bixby
- Samsung DeX
- Samsung Pay (MST, NFC)
- Colors: Phantom Black, Silver, Titanium, Navy, Brown
- Samsung Pay (Visa, MasterCard)
- Samsung DeX
- Stylus pen support

☢️ Radiation rate

Samsung Galaxy S20 Ultra (SM-G988B/DS)Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)0.74W/kg (head), 1.12W/kg (body)0.77W/kg (head), 1.02W/kg (body)
SAR 2W/kg (Europe, UK, etc.)0.319W/kg (head), 1.557W/kg (body)feature not registered
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