Sony Xperia XZ2 Premium (H8166) vs Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)

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Side by side comparison between Sony Xperia XZ2 Premium vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?

1/16/2021 4:45 PM, updated: 5/19/2025 11:26 AM

Compare Samsung Galaxy S21 Ultra X Sony Xperia XZ2 Premium (H8166) 03Points

Specifications Compare Models Pictures

5.8"
IPS

2160x3840

19.2
MP

13mp

6GB
RAM

Octa-core

3540
mAh

(Non removable)

27Points Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB) Compare Sony Xperia XZ2 Premium X

Specifications Compare Models Pictures

6.8"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

Octa-core

5000
mAh

(Non removable)

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

3 Advantages Sony Xperia XZ2 Premium (H8166)	vs	27 Advantages Samsung Galaxy S21 Ultra (SM-G998B/DS 128GB)
+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+2160x3840 pixels80% Higher resolution screen	vs	1440x3200 pixels
+760 PPI47% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	516 PPI
2.7GHz 64bit Octa-core	vs	+2.9GHz 64bit Octa-core (5nm)4% More powerful processor, you can open your applications faster
6GB LPDDR4	vs	+12GB LPDDR5100% More RAM memory. Typically more responsive and better for multitasking.
64GB (50GB available)	vs	+128GB (101GB available)102% More internal storage for applications and files
236 grams (8.26 ounces)	vs	+227 grams (7.95 ounces)4% Lighter
11.9 millimeters (0.47 inches)	vs	+8.9 millimeters (0.35 inches)34% Thinner
TFT IPS LCD	vs	+Dynamic AMOLEDAdvantage Dynamic AMOLED display is brighter and more vivid
5.8"	vs	+6.8"17% Larger screen
(dual camera) 19.2MP + 12MP	vs	+(quad camera) 108MP + 10MP + 10MP + 12MP3 times Higher resolution main camera
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
EIS: Digital stabilization	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
HDR photo/video only main camera	vs	+HDR photo/video on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
1/2.3" inches	vs	+1/1.33" inches73% The larger sensor camera lets you take photos with better depth.
(front) 13MP	vs	+(front) 40MP2 times Higher resolution secondary camera to take pictures and selfies
4K UHD (3840x2160)	vs	+8K UHD (7680x4320)3 times More image quality for recording videos with the primary camera
(front) Full HD (1920x1080)	vs	+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera
Android 8.0 Oreo	vs	+Android 15Advantage Android 15 is newer and safer
4G LTE-A	vs	+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster
(4G LTE-A) 1200 Mbps	vs	+(5G SA/NSA) 5000 Mbps3 times Faster for surfing the internet and download files
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
Not supported	vs	+UWB (Ultra Wideband)Advantage Sensors help you use the device
3540 mAh	vs	+5000 mAh41% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)	vs	+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general
802.11 a/b/g/n/ac [wifi5]	vs	+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
5.0 + A2DP/LE	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster
USB 3.1 Type-C, USB OTG On-The-Go	vs	+USB 3.2 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.

27 Common items in both devices

Aluminum frame, glass front/back

16 million

LED flash

LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus on both cameras

f/1.8 (aperture)

Capacitive

Multitouch

+20 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Change model		Choose the model
Model	Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Other model names	Sony Xperia XZ2 Premium Dual-sim, Sony PF12	Galaxy S21 Ultra 5G (SM-G998B/Dual-SIM)
Country or region available	Bulgaria, China, Hong Kong, Taiwan	(Global, International)
Brand	Sony	Samsung
Release date	7/30/2018	1/29/2021, Announced: 1/14/2021
Depth	11.9 millimeters (0.47 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	80 x 158 millimeters (3.15 x 6.22 in)	75.6 x 165.1 millimeters (2.98 x 6.5 in)
Weight	236 grams (8.26 ounces)	227 grams (7.95 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum frame, glass front/back
Protection against water and others	Waterproof (IP?)	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Display type	TFT IPS LCD	Dynamic AMOLED
Screen size	5.8" inches	6.8" inches
Screen-to-body ratio	~73.4% (screen-to-body ratio)	~89.4% (screen-to-body ratio)
Display resolution	2160x3840 pixels	1440x3200 pixels (20:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	760 PPI	516 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass Victus
Refresh rate	feature not registered	120Hz
Display features	feature not registered	1500nits[peak] HDR10+ Always-On Display
🤖 Operating System
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
System version	Android 8.0 Oreo	Android 11
Firmware update	feature not registered	Android 15
User Interface	feature not registered	One UI 3.1 / 4.1 / 5.1 / 6.0 / 7.0
⚙️ Processor
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Chipset	64bit: Qualcomm Snapdragon 845 MSM8998 (10nm)	64bit: Samsung Exynos 2100 (5nm)
CPU	Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core)	Octa-core, 3 processors: 1x 2.9GHz ARM Cortex-X1 (Single-core) 3x 2.8GHz ARM Cortex-A78 (Triple-core) 4x 2.2GHz ARM Cortex-A55 (Quad-core)
GPU graphical controller	Qualcomm Adreno 630 710Mhz	ARM Mali-G78 MP14 (854MHz)
Performance (benchmark)	feature not registered	AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen)
💽 Memory and storage
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
RAM memory	6GB LPDDR4	12GB LPDDR5
Internal storage	64GB (50GB available)	128GB (101GB available) UFS 3.1
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Not supported
📶 Mobile networks
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Dual-SIM	Dual-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 card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM
Maximum Download / Upload	1200/150 Mbps	5000/1920 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G, 5G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 800/850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat18 (Bands 1,2,3,4,5,7,8,12,13,17,19,20,25,26,28,66) TD-LTE (Bands 38,39,40,41) VoLTE	LTE 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
Primary 5G network	Not supported	SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE 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
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
📷 Camera
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Back camera (main camera)	(dual camera) 19.2 megapixels 12MP mono f/1.61/2.3"	(quad camera) 108 megapixels 10MP periscope telephoto f/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom 10MP telephoto f/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video
Main camera resolution	5056x3792 pixels	12000x9000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	8K UHD (7680x4320) 24 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	25mm (lens)	26mm (lens)
Sensor size	1/2.3" inches	1/1.33" inches
Pixel size	1.22µm pixel	1.8µm pixel
Autofocus	LDAF/PDAF: laser/phase detection autofocus	PDAF: phase detection autofocus on both cameras
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo/video only main camera	HDR photo/video on both cameras
Camera extras	feature not registered	4K@60fps 1080p@240fps 720p@960fps
📸 Front camera
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Front camera (secondary)	13 megapixels	40 megapixels
Front camera resolution	4128x3096 pixels	7296x5472 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	22mm (lens)	26mm (lens)
Sensor size	1/3" inches	1/2.8" inches
Pixel size	1.12µm pixel	0.7µm pixel
🔉 Sound and multimedia
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG
Active noise cancellation	2 microphones or more	3 microphones
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
USB	USB 3.1 Type-C, USB OTG On-The-Go	USB 3.2 Type-C, USB OTG On-The-Go
Audio output	Type-C jack with 3.5mm jack adapter	Type-C reversible connector
TV output	Not supported	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	5.2 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Sensors	Accelerometer Ambient light sensor Barometer Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband)
Vibrating alert	Supported	Supported
🔋 Battery
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3540 mAh	5000 mAh
Charger, watts	Wired charging	25W Wired fast charging USB Power Delivery 3.0
Inductive / wireless charging	Qi wireless charging	15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Chrome Black, Chrome Silver • HDR10 display • Triluminos display • X-Reality Engine • Quick Charge 3.0 • 24-bit/192kHz audio • WiFi miracast • IP68 certified: dust/water proof up to 1.5m for 30min	• Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support
☢️ Radiation rate
	Sony Xperia XZ2 Premium (H8166)	Galaxy S21 Ultra (SM-G998B/DS 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.24W/kg (head), 0.72W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.714W/kg (head), 1.58W/kg (body)