Samsung Galaxy S21 Ultra vs Vivo X100 Ultra

Key Specs

Battery
Battery	5000 mAh	5500 mAh
Display
Display	6.8 inches (17.27 cm)	6.78 inches (17.22 cm)
Front Camera
Front Camera	40 MP	32 MP
Processor
Processor	Samsung Exynos 2100	Qualcomm Snapdragon 8 Gen 3
RAM
RAM	12 GB	12 GB
Rear Camera
Rear Camera	108 MP + 10 MP + 10 MP + 12 MP	64 MP + 50 MP + 64 MP

Battery

Capacity
Capacity	5000 mAh	5500 mAh
Quick Charging
Quick Charging	Yes, Fast, 25W	Yes, Fast, 100W
Removable
Removable	No	No
TalkTime
TalkTime	Up to 41 Hours(4G)	-
Type
Type	Li-ion	Li-Polymer
USB Type-C
USB Type-C	Yes	Yes
Wireless Charging
Wireless Charging	Yes	-

Design

Build Material
Build Material	Back: Gorilla Glass	-
Colours
Colours	Phantom Silver, Phantom Black, Phantom Brown	-
Height
Height	165.1 mm	-
Ruggedness
Ruggedness	Dust proof	-
Thickness
Thickness	8.9 mm	-
Waterproof
Waterproof	Yes, Water resistant (up to 30 minutes in a depth of 1.5 meter), IP68	-
Weight
Weight	227 grams	-
Width
Width	75.6 mm	-

Display

Aspect Ratio
Aspect Ratio	20:9	20:9
Bezel-less display
Bezel-less display	Yes with punch-hole display	Yes with punch-hole display
Brightness
Brightness	1500 nits	-
Display Type
Display Type	Dynamic AMOLED 2x	AMOLED
HDR 10 / HDR+ support
HDR 10 / HDR+ support	Yes, HDR 10+	-
Pixel Density
Pixel Density	516 ppi	453 ppi
Refresh Rate
Refresh Rate	120 Hz	120 Hz
Resolution
Resolution	1440x3200 px (QHD+)	1260x2800 px (FHD+)
Screen Protection
Screen Protection	Corning Gorilla Glass, Glass Victus	-
Screen Size
Screen Size	6.8 inches (17.27 cm)	6.78 inches (17.22 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	89.44 %	-
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Autofocus
Autofocus	Yes, Phase Detection autofocus	-
Camera Setup
Camera Setup	Single	Single
Resolution
Resolution	40 MP f/2.2, Wide Angle, Primary Camera(26 mm focal length, 2.8" sensor size, 0.7µm pixel size)	32 MP, Primary Camera
Video Recording
Video Recording	3840x2160 @ 30 fps 1920x1080 @ 30 fps	-

Not sure which
mobile to buy?

General

Brand
Brand	Samsung	vivo
Custom UI
Custom UI	Samsung One UI	-
Launch Date
Launch Date	January 27, 2021 (Official)	June 27, 2024 (Unofficial)
Operating System
Operating System	Android v11	Android v14

Main Camera

Autofocus
Autofocus	Yes, Phase Detection autofocus, Laser autofocus	Yes
Camera Features
Camera Features	Digital Zoom Auto Flash Face detection Touch to focus	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
Camera Setup	Quad	Triple
Flash
Flash	Yes, LED Flash	Yes, LED Flash
Image Resolution
Image Resolution	12000 x 9000 Pixels	9000 x 7000 Pixels
OIS
OIS	Yes	-
Resolution
Resolution	108 MP f/1.8, Wide Angle, Primary Camera(26 mm focal length, 1.33" sensor size, 0.8µm pixel size)10 MP f/4.9, Periscope Camera(240 mm focal length, 3.24" sensor size, 1.22µm pixel size)10 MP f/2.4, Telephoto Camera(70 mm focal length, 3.24" sensor size, 1.22µm pixel size)12 MP f/2.2, Ultra-Wide Angle Camera(13 mm focal length, 2.55" sensor size, 1.4µm pixel size)	64 MP, Wide Angle, Primary Camera 50 MP, Ultra-Wide Angle Camera 64 MP , Telephoto Camera
Sensor
Sensor	S5KHM3, ISOCELL Plus	CMOS image sensor
Settings
Settings	Exposure compensation, ISO control	Exposure compensation, ISO control
Shooting Modes
Shooting Modes	Continuous Shooting High Dynamic Range mode (HDR)	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
Video Recording	7680x4320 @ 24 fps 3840x2160 @ 30 fps 1920x1080 @ 60 fps 1280x720 @ 960 fps	7680x4320 @ 30 fps 3840x2160 @ 30 fps
Video Recording Features
Video Recording Features	Slo-motion Video HDR Bokeh portrait video Video Pro Mode	-

Multimedia

Audio Jack
Audio Jack	USB Type-C	USB Type-C
FM Radio
FM Radio	No	-
Loudspeaker
Loudspeaker	Yes	Yes
Stereo Speakers
Stereo Speakers	Yes	-

Network & Connectivity

Bluetooth
Bluetooth	Yes, v5.2	Yes, v5.4
GPS
GPS	Yes with A-GPS, Glonass	Yes with A-GPS, Glonass
NFC
NFC	Yes	Yes
Network Support
Network Support	5G Supported in India, 4G Supported in India, 3G, 2G	5G Supported in India, 4G Supported in India, 3G, 2G
SAR Value
SAR Value	Head: 0.77 W/kg, Body: 1.02 W/kg	-
SIM 1
SIM 1	5G Bands: FDD N1 / N3 / N5 / N7 / N8 / N20 / N28 / N66 TDD N38 / N40 / N41 / N77 / N78 4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	5G Bands: FDD N3 TDD N40 4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM 2
SIM 2	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	5G Bands: FDD N3 TDD N40 4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM Size
SIM Size	SIM1: Nano, SIM2: Nano	SIM1: Nano, SIM2: Nano
SIM Slot(s)
SIM Slot(s)	Dual SIM, GSM+GSM	Dual SIM, GSM+GSM
USB Connectivity
USB Connectivity	Mass storage device, USB charging	Mass storage device, USB charging
VoLTE
VoLTE	Yes	Yes
Wi-Fi
Wi-Fi	Yes, Wi-Fi 6 (802.11 a/b/g/n/ac/ax) 5GHz, MIMO	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Calling
Wi-Fi Calling	Yes	-
Wi-Fi Features
Wi-Fi Features	Wi-Fi Direct, Mobile Hotspot	Mobile Hotspot

Performance

Architecture
Architecture	64 bit	64 bit
CPU
CPU	Octa core (2.9 GHz, Single core, Cortex X1 + 2.8 GHz, Tri core, Cortex A78 + 2.2 GHz, Quad core, Cortex A55)	Octa core (3.3 GHz, Single core, Cortex X4 + 3.2 GHz, Penta Core, Cortex A720 + 2.3 GHz, Tri core, Cortex A520)
Chipset
Chipset	Samsung Exynos 2100	Qualcomm Snapdragon 8 Gen 3
Fabrication
Fabrication	5 nm	4 nm
Graphics
Graphics	Mali-G78 MP14	Adreno 750
RAM type
RAM Type	LPDDR5	LPDDR5X

Sensors

Fingerprint Sensor
Fingerprint Sensor	Yes	Yes
Fingerprint Sensor Position
Fingerprint Sensor Position	On-screen	On-screen
Fingerprint Sensor Type
Fingerprint Sensor Type	Ultrasonic	Optical
Other Sensors
Other Sensors	Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
Expandable Memory	No	No
Internal Memory
Internal Memory	256 GB	256 GB
Storage Type
Storage Type	UFS 3.1	UFS 4.0
USB OTG
USB OTG	Yes	-
User Available Storage
User Available Storage	Up to 220 GB	-