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Full Differences Change compare mode	Review Specs 128GB 12GB RAM $ 291.99	Review Specs

Samsung Galaxy S21 Ultra 5G

Sony Xperia Z3

Network
Technology	GSM / CDMA / HSPA / EVDO / LTE / 5G	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)	GSM 850 / 900 / 1800 / 1900 - D6603, D6643, D6653, D6616
	CDMA 800 / 1900 & TD-SCDMA
3G Network	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700 / 1900 / 2100 - D6603, D6643, D6616
	CDMA2000 1xEV-DO	HSDPA 850 / 900 / 1900 / 2100 - D6653
4G Network	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1	1, 2, 3, 4, 5, 7, 8, 13, 17, 20 - D6603
	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G998B	1, 2, 3, 4, 5, 7, 8, 17, 20 - D6643
		1, 3, 5, 7, 8, 28, 40 - D6653
		2, 4, 12 - D6616
5G Network	2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1
	1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B
Speed	HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch
Announced	2021, January 14	2014, September 03. Released 2014, November 06
Status	Available. Released 2021, January 29	Discontinued

Body
Dimensions	165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)	146 x 72 x 7.3 mm (5.75 x 2.83 x 0.29 in)
3D size compare	Size up
Weight	227 g (Sub6), 229 g (mmWave) (8.01 oz)	152 g (5.36 oz)
Build	Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame	Glass front, glass back, aluminum frame
SIM	Nano-SIM and eSIM or Dual SIM (2 Nano-SIMs and eSIM, dual stand-by)	Nano-SIM
	IP68 dust/water resistant (up to 1.5m for 30 min) Stylus support	IP68 dust/water resistant (up to 1.5m for 30 min)

Display
Type	Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)	IPS LCD
Size	6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)	5.2 inches, 74.5 cm2 (~70.9% screen-to-body ratio)
Resolution	1440 x 3200 pixels, 20:9 ratio (~515 ppi density)	1080 x 1920 pixels, 16:9 ratio (~424 ppi density)
Protection	Corning Gorilla Glass Victus	Scratch-resistant glass, oleophobic coating
	Always-on display	Triluminos display X-Reality Engine

Platform
OS	Android 11, upgradable to Android 14, One UI 6.1	Android 4.4.4 (KitKat), upgradable to 6.0 (Marshmallow)
Chipset	Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China	Qualcomm MSM8974AC Snapdragon 801 (28 nm)
CPU	Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China	Quad-core 2.5 GHz Krait 400
GPU	Mali-G78 MP14 - International Adreno 660 - USA/China	Adreno 330

Memory
Card slot	No	microSDXC (dedicated slot)
Internal	128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM	16GB 3GB RAM, 32GB 3GB RAM
	UFS 3.1	eMMC 5.0

Main Camera
Modules	108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video	20.7 MP, f/2.0, 25mm (wide), 1/2.3", 1.12µm, AF
Features	LED flash, auto-HDR, panorama	LED flash, HDR, panorama
Video	8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS	4K@30fps, 1080p@60fps, 720p@120fps, HDR

Selfie Camera
Modules	40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF	2.2 MP, f/2.8
Features	Dual video call, Auto-HDR
Video	4K@30/60fps, 1080p@30fps	1080p@30fps

Sound
Loudspeaker	Yes, with stereo speakers	Yes, with stereo speakers
3.5mm jack	No	Yes
	32-bit/384kHz audio Tuned by AKG

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
Bluetooth	5.2, A2DP, LE	4.0, A2DP, aptX
Positioning	GPS, GLONASS, BDS, GALILEO	GPS, GLONASS, BDS
NFC	Yes	Yes
Infrared port	No	No
Radio	FM radio (Snapdragon model only; market/operator dependent)	FM radio, RDS
USB	USB Type-C 3.2, OTG	microUSB 2.0 (MHL 3 TV-out), OTG, magnetic connector

Features
Sensors	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer	Accelerometer, gyro, proximity, compass, barometer
	Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support	ANT+

Battery
Type	Li-Ion 5000 mAh, non-removable	Li-Ion 3100 mAh, non-removable
Charging	25W wired, PD3.0 15W wireless (Qi/PMA) 4.5W reverse wireless	18W wired, QC2 (Japan)
Stand-by		Up to 890 h (2G) / Up to 740 h (3G)
Talk time		Up to 14 h (2G) / Up to 16 h (3G)
Music play		Up to 130 h

Misc
Colors	Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy	Black, White, Copper, Silver Green, Purple
SAR	0.77 W/kg (head)     1.02 W/kg (body)	0.80 W/kg (head)     1.44 W/kg (body)
SAR EU	0.71 W/kg (head)     1.58 W/kg (body)	0.62 W/kg (head)     0.65 W/kg (body)
Models	SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980	D6603, D6653, D6616, D6643, SO-01G, SOL26, D6646
Price	$ 291.99 / C$ 468.97 / £ 279.00 / € 405.00	About 180 EUR

Tests
Performance	AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)	Basemark X: 12637
Display	Contrast ratio: Infinite (nominal)	Contrast ratio: 1333:1 (nominal), 2.618 (sunlight)
Camera	Compare PHOTO / Compare VIDEO
Loudspeaker	-25.5 LUFS (Very good)	Voice 69dB / Noise 66dB / Ring 67dB
Audio quality		Noise -86.4dB / Crosstalk -86.6dB
Battery (old)	Endurance rating 114h	Endurance rating 85h