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Samsung Galaxy S21 Ultra (SM-G998U1 128GB) vs Samsung Galaxy Z Fold 3 (SM-F926U 256GB)

Side by side comparison between Samsung Galaxy S21 Ultra vs Samsung Galaxy Z Fold 3 phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy Z Fold 3 XSamsung Galaxy S21 Ultra (SM-G998U1 128GB)10Points
Samsung Galaxy S21 Ultra (SM-G998U1 128GB)
6.8"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
04PointsSamsung Galaxy Z Fold 3 (SM-F926U 256GB)Compare Samsung Galaxy S21 Ultra X
Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
7.6"
AMOLED

1768x2208

12.2
MP

10mp

12GB
RAM

64bit Octa

4400
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!


47 Common items in both devices
2.84GHz 64bit Octa-Core
12GB LPDDR5
UFS 3.1
Aluminum frame, glass front/back / Aluminum frame, flexible plastic screen, glass back
Dynamic AMOLED
HDR10+
120Hz
+40 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-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
ModelGalaxy S21 Ultra (SM-G998U1 128GB)Galaxy Z Fold 3 (SM-F926U 256GB)
Other model namesGalaxy S21 Ultra 5G (SM-G998U1) UnlockedSamsung Galaxy Z Fold3 5G (SM-F926U1)
Country or region availableUSA
USA
USA
USA
BrandSamsungSamsung
Release date1/29/2021, Announced: 1/14/20218/27/2021, Announced: 8/11/2021
Depth8.9 millimeters (0.35 inches)6.4 millimeters (0.25 inches)
Size (width x height)75.6 x 165.1 millimeters (2.98 x 6.5 in)128.1 x 158.2 millimeters (5.04 x 6.23 in)
Weight227 grams (7.95 ounces)271 grams (9.49 ounces)
Build, materialsAluminum frame, glass front/backAluminum frame, flexible plastic screen, glass back
Protection against water and othersIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistantIPX8 certified: water resistant up to 1.5 meters and 30min

🤖 Operating System

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
System versionAndroid 11Android 11
Firmware updateAndroid 13Android 13
User InterfaceOne UI 3.1 / 4.1 / 5.0One UI 3.1 / 4.1 / 5.0

⚙️ Processor

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
Chipset64bit - Qualcomm Snapdragon 888 (SM8350) (5nm)64bit - Qualcomm Snapdragon 888 (SM8350) (5nm)
CPUOcta-Core, 3 processors:
2.84GHz Single-Core Kryo 680
2.42GHz Triple-Core Kryo 680
1.8GHz Quad-Core Kryo 680
Octa-Core, 3 processors:
2.84GHz Single-Core Kryo 680
2.42GHz Triple-Core Kryo 680
1.8GHz Quad-Core Kryo 680
GPU graphical controllerQualcomm Adreno 660 (840MHz)Qualcomm Adreno 660 (840MHz)
Performance (benchmark)AnTuTu: 681099 (v8), 809165 (v9)
Geekbench: 3539 (v5.2)
GFXBench: 54fps (ES 3.1 onscreen)
AnTuTu: 635918 (v8), 752218 (v9)
Geekbench: 3239 (v5.1)
GFXBench: 38fps (ES 3.1 onscreen)

💽 Memory and storage

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
RAM memory12GB LPDDR512GB LPDDR5
Internal storage128GB (101GB available)
UFS 3.1
256GB (220GB available)
UFS 3.1
External storageNot supportedNot supported

📲 Display

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
Display typeDynamic AMOLEDDynamic AMOLED
Screen size6.8" inches7.6" inches
Screen-to-body ratio~89.4% (screen-to-body ratio)~89.7% (screen-to-body ratio)
Display resolution1440x3200 pixels (20:9)1768x2208 pixels
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)516 PPI372 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass VictusNot supported
Refresh rate120Hz120Hz
Display features1500nits[peak]
HDR10+
Always-On Display
1200nits[peak]
HDR10+
Extra display: 6.2" Dynamic AMOLED 2X, 120Hz, Gorilla Glass Victus, (832x2268px)

📶 Mobile networks

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
Dual-SIMDual-SIM Standby - Call active on one sim cardDual-SIM Standby - Call active on one sim card
SIM card1 slot (Single-SIM)
nano-SIM (4FF) + e-SIM
1 slot (Single-SIM)
nano-SIM (4FF) + e-SIM
Maximum download/upload5000/1920 Mbps5000/1024 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 networkCDMA 800/1900, GSM 850/900/1800/1900CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
CDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE 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
LTE Cat20 (2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 66)
TD-LTE (38, 39, 40, 41, 46, 48)
VoLTE
Primary 5G networkSA/NSA/Sub6 (2, 5, 25, 41, 66, 71)
mmWave (260, 261)
SA/NSA/Sub6/mmWave (2, 5, 25, 41, 66, 71, 260, 261)
Primary data networkGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA, 5G NRGPRS, 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 networkCDMA 800/1900, GSM 850/900/1800/1900Not supported
Secondary 3G networkCDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
Not supported
Secondary 4G networkLTE 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
Not supported
Secondary data networkGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA, 5G NRNot supported

📷 Camera

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
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
(triple camera)
12.2 megapixels
12MP telephotof/2.452mm1/3.6"1.0µmPDAFOIS2x-optical-zoom
12MP ultrawidef/2.2123°12mm1.12µm
Main camera resolution12000x9000 pixels4032x3024 pixels
Video recording (primary)8K UHD (7680x4320) 24 fps4K UHD (3840x2160) 60 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.33" inches1/1.76" inches
Pixel size1.8µm pixel1.8µm pixel
AutofocusPDAF: phase detection autofocus on both camerasPDAF: phase detection autofocus
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
1080p@60/240fps
720p@960fps
Extra cover camera: 4MP (f/1.8 2.0µm)

📸 Front camera

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
Front camera (secondary)40 megapixels10 megapixels
Front camera resolution7296x5472 pixels3872x2592 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 size1/2.8" inches1/3" inches
Pixel size0.7µm pixel1.22µm pixel

🔉 Sound and multimedia

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
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
RadioFMNot supported
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 S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
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)
Bluetooth5.2 + 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 wifi6/6E (2.4Ghz, 5Ghz, 6Ghz) + MIMO
WiFi Direct, hotspot
DLNASupportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedSupported
Infrared portNot supportedNot supported

🧭 Sensors

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
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 (side-mounted)
Gyroscope
Hall effect
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
Battery typeLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 mAh4400 mAh
Charger, watts25W Fast battery charging
15W Qi wireless charging (Qi/PMA)
4.5W Reverse wireless charging between devices
USB Power Delivery 3.0
25W Fast battery charging
Reverse charging USB between devices
11W WPC/Qi Wireless charging
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 S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
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: Phantom Black, Silver, Titanium, Navy, Brown
- Samsung Pay (Visa, MasterCard)
- Samsung DeX
- Stylus pen support
- Colors: Phantom Black, Silver, Green
- Gorilla Glass Victus on the back
- Stylus pen support
- Bixby
- Samsung DeX
- Samsung Pay (MST, NFC)
- Cover camera: 4MP (f/1.8 2.0µm)

☢️ Radiation rate

Samsung Galaxy S21 Ultra (SM-G998U1 128GB)Samsung Galaxy Z Fold 3 (SM-F926U 256GB)
SAR 1.6W/kg (USA, Mexico, etc.)0.77W/kg (head), 1.02W/kg (body)0.73W/kg (head), 1.22W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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