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Samsung Galaxy S21 Ultra (SM-G998B 128GB) vs Samsung Galaxy M20 (SM-M205F/DS 32GB)

Side by side comparison between Samsung Galaxy S21 Ultra vs Samsung Galaxy M20 phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy M20 XSamsung Galaxy S21 Ultra (SM-G998B 128GB)37Points
Samsung Galaxy S21 Ultra (SM-G998B 128GB)
6.8"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
04PointsSamsung Galaxy M20 (SM-M205F/DS 32GB)Compare Samsung Galaxy S21 Ultra X
Samsung Galaxy M20 (SM-M205F/DS 32GB)
6.3"
PLS

1080x2340

13
MP

8mp

3GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 Ultra (SM-G998B 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!

Galaxy S21 Ultra (SM-G998B 128GB)37 Advantages Samsung Galaxy S21 Ultra (SM-G998B 128GB)vsGalaxy M20 (SM-M205F/DS 32GB)4 Advantages Samsung Galaxy M20 (SM-M205F/DS 32GB)
+2.9GHz 64bit Octa-Core62%
More powerful processor, you can open your applications faster
vs1.8GHz 64bit Octa-Core
+12GB LPDDR53 times
More RAM memory. Typically more responsive and better for multitasking.
vs3GB LPDDR4X
+128GB (101GB available)4 times
More internal storage for applications and files
vs32GB (21GB available)
+UFS 3.1Advantage
Fastest write and read storage.
vseMMC 5.1
+Aluminum frame, glass front/backAdvantage
More resistant material
vsPlastic body, glass front
+Dynamic AMOLEDAdvantage
Dynamic AMOLED display is brighter and more vivid
vsTFT PLS
+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 pixels82%
Higher resolution screen
vs1080x2340 pixels
+516 PPI26%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs409 PPI
+6.8"8%
Larger screen
vs6.3"
+(quad camera) 108MP + 10MP + 10MP + 12MP7 times
Higher resolution main camera
vs(dual camera) 13MP + 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" inches133%
The larger sensor camera lets you take photos with better depth.
vs1/3.1" inches
+f/1.8 (aperture)6%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/1.9 (aperture)
+(front) 40MP4 times
Higher resolution secondary camera to take pictures and selfies
vs(front) 8MP
+8K UHD (7680x4320)15 times
More image quality for recording videos with the primary camera
vsFull HD (1920x1080)
+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
vs(front) Full HD (1920x1080)
+Android 13Advantage
Android 13 is newer and safer
vsAndroid 10
+5G SA/NSAAdvantage
The 5G SA/NSA network is newer and faster
vs4G+ LTE-A
+(5G SA/NSA) 5000 Mbps7 times
Faster for surfing the internet and download files
vs(4G+ LTE-A) 600 Mbps
+Ambient Light sensorAdvantage
Sensors help you use the device
vsNot supported
+ANT+Advantage
Sensors help you use the device
vsNot supported
+BarometerAdvantage
Sensors help you use the device
vsNot supported
+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.
vs15W
+Qi wireless charging (Qi/PMA)Advantage
Wireless charging is another way to charge the battery.
vsNot supported
+1 slot (Single-SIM) + e-SIM (Eletronic)Advantage
You can have more mobile carriers/operators on the same device.
vs2 slots (Dual-SIM)
(dedicated slot)
+Stereo soundAdvantage
Better sound quality for listening to music or clearer hands-free calls
vsMono sound (not stereo)
+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 b/g/n (2.4Ghz)
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
vsNot supported
+5.2 + A2DP/LEAdvantage
Bluetooth 5.2 + A2DP/LE is newer and faster
vs5.0 + A2DP/LE
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
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
+Gorilla Glass VictusAdvantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsNot supported
Not supportedvs+Until 1TB microSD, microSDXCAdvantage
More external storage for files using memory cards
227 grams (7.95 ounces)vs+186 grams (6.51 ounces)22%
Lighter
8.9 millimeters (0.35 inches)vs+8.8 millimeters (0.35 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

21 Common items in both devices
16 million
LED flash
PDAF: phase detection autofocus on both cameras / PDAF: phase detection autofocus
HDR photo/video on both cameras / HDR photo on both cameras
Capacitive
Multitouch
Accelerometer
+14 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 S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
ModelGalaxy S21 Ultra (SM-G998B 128GB)Galaxy M20 (SM-M205F/DS 32GB)
Other model namesGalaxy S21 Ultra 5G (SM-G998B Single-SIM)Galaxy M20 SM-M205F/Dual-Sim (32GB + 3GB RAM)
Country or region availableAustralia
Australia
(Global, International)South AfricaSaudi ArabiaEgyptUnited Arab EmiratesIndiaMorocco
(Global, International), South Africa, Saudi Arabia, Egypt, United Arab Emirates, India, Morocco
BrandSamsungSamsung
Release date1/29/2021, Announced: 1/14/20212/5/2019, Announced: 1/28/2019
Depth8.9 millimeters (0.35 inches)8.8 millimeters (0.35 inches)
Size (width x height)75.6 x 165.1 millimeters (2.98 x 6.5 in)74.5 x 156.4 millimeters (2.93 x 6.16 in)
Weight227 grams (7.95 ounces)186 grams (6.51 ounces)
Build, materialsAluminum frame, glass front/backPlastic body, glass front
Protection against water and othersIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistantNot supported

🤖 Operating System

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
System versionAndroid 11Android 8.1 Oreo
Firmware updateAndroid 13Android 10
User InterfaceOne UI 3.1 / 4.1 / 5.0One UI 1.1 / 2.0

⚙️ Processor

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Chipset64bit - Samsung Exynos 2100 (5nm)64bit - Samsung Exynos 7904 (14nm)
CPUOcta-Core, 3 processors:
2.9GHz Single-Core ARM Cortex-X1
2.8GHz Triple-Core ARM Cortex-A78
2.2GHz Quad-Core ARM Cortex-A55
Octa-Core, 2 processors:
1.8GHz Dual-Core ARM Cortex-A73
1.6GHz Hexa-Core ARM Cortex-A53
GPU graphical controllerARM Mali-G78 MP14 (854MHz)ARM Mali-G71 MP2 (770MHz)
Performance (benchmark)AnTuTu: 657150 (v8), 727634 (v9)
Geekbench: 3457 (v5.2)
GFXBench: 51fps (ES 3.1 onscreen)
AnTuTu: 108751 (v7)
Geekbench: 4160 (v4.4)
GFXBench: 4.4fps (ES 3.1 onscreen)

💽 Memory and storage

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
RAM memory12GB LPDDR53GB LPDDR4X
Internal storage128GB (101GB available)
UFS 3.1
32GB (21GB available)
eMMC 5.1
External storageNot supportedUntil 1TB microSD, microSDXC
(dedicated slot)

📲 Display

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Display typeDynamic AMOLEDTFT PLS
Screen size6.8" inches6.3" inches
Screen-to-body ratio~89.4% (screen-to-body ratio)~83.6% (screen-to-body ratio)
Display resolution1440x3200 pixels (20:9)1080x2340 pixels (19.5:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)516 PPI409 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass VictusNot supported
Refresh rate120Hz60Hz
Display features1500nits[peak]
HDR10+
Always-On Display
Not supported

📶 Mobile networks

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Dual-SIMDual-SIM Standby - Call active on one sim cardDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card1 slot (Single-SIM)
nano-SIM (4FF) + e-SIM
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload5000/1920 Mbps600/50 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G
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 (1, 3, 5, 7, 8, 20)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkSA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)Not supported
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
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1900/2100
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
Not supported
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+

📷 Camera

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Back camera (main camera)(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
(dual camera)
13 megapixels
5MP ultrawidef/2.212mm120°
Main camera resolution12000x9000 pixels4128x3096 pixels
Video recording (primary)8K UHD (7680x4320) 24 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.9 (aperture)
Focal length26mm lensfeature not registered
Sensor size1/1.33" inches1/3.1" inches
Pixel size1.8µm pixel1.12µm 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
Camera extras4K@60fps
1080p@240fps
720p@960fps
feature not registered

📸 Front camera

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Front camera (secondary)40 megapixels8 megapixels
Front camera resolution7296x5472 pixels3264x2448 pixels
Video recording (secondary)4K UHD (3840x2160)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.0 (aperture)
Focal length26mm lens25mm lens
Sensor size1/2.8" inchesfeature not registered
Pixel size0.7µm pixelfeature not registered

🔉 Sound and multimedia

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
LoudspeakerStereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Mono sound (not stereo)
Active noise cancellation2 microphones or more2 microphones or more
RadioFMFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
USBUSB 3.2 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
Audio outputType-C reversible connector3.5mm jack
TV outputUSB Type-C (reversible)USB Type-C (reversible)
Bluetooth5.2 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO
WiFi Direct, hotspot
802.11 b/g/n (2.4Ghz)
WiFi Direct, hotspot
DLNASupportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, BeiDou
NFCSupportedNot supported
Infrared portNot supportedNot supported

🧭 Sensors

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
SensorsAccelerometer
Ambient Light sensor
ANT+
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gesture
Gyroscope
Hall effect
Proximity sensor
Accelerometer
Compass
Face unlock
Fingerprint sensor (rear-mounted)
Gyroscope
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Battery typeLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 mAh5000 mAh
Charger, watts25W Fast battery charging
15W Qi wireless charging (Qi/PMA)
4.5W Reverse wireless charging between devices
USB Power Delivery 3.0
15W Fast battery charging
Talk time autonomyfeature not registered29 hours (1.2 days)
Standbyfeature not registeredfeature not registered

➕ Other features

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
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: Phantom Black, Silver, Titanium, Navy, Brown
- Samsung Pay (Visa, MasterCard)
- Samsung DeX
- Stylus pen support
- Colors: Charcoal Black, Ocean Blue
- 19.5:9 ratio display FHD+
- Dolby Atmos sound

☢️ Radiation rate

Samsung Galaxy S21 Ultra (SM-G998B 128GB)Samsung Galaxy M20 (SM-M205F/DS 32GB)
SAR 1.6W/kg (USA, Mexico, etc.)0.24W/kg (head), 0.72W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)0.714W/kg (head), 1.58W/kg (body)0.248W/kg (head), 1.591W/kg (body)
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