Samsung Galaxy S21 Ultra (SM-G998U1 256GB) vs LG G8S ThinQ (G810RA)

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Side by side comparison between Samsung Galaxy S21 Ultra vs LG G8S ThinQ phones, differences, pros, cons and full specifications. What's the better?

11/14/2021 5:17 PM, updated: 5/19/2025 11:26 AM

Compare LG G8S ThinQ X Samsung Galaxy S21 Ultra (SM-G998U1 256GB) 25Points

Specifications Compare Models Pictures

6.8"
AMOLED

1440x3200

108
MP

40mp

12GB
RAM

Octa-core

5000
mAh

(Non removable)

04Points LG G8S ThinQ (G810RA) Compare Samsung Galaxy S21 Ultra X

Specifications Compare Models Pictures

6.21"
POLED

1080x2248

12
MP

8mp

6GB
RAM

Octa-core

3550
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 Ultra (SM-G998U1 256GB)

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!

25 Advantages Samsung Galaxy S21 Ultra (SM-G998U1 256GB)	vs	4 Advantages LG G8S ThinQ (G810RA)
+2.84GHz 64bit Octa-core (5nm)10% More powerful processor, you can open your applications faster	vs	2.84GHz 64bit Octa-core (7nm)
+12GB LPDDR5100% More RAM memory. Typically more responsive and better for multitasking.	vs	6GB LPDDR4X
+256GB (220GB available)112% More internal storage for applications and files	vs	128GB (104GB available)
+UFS 3.1Advantage Fastest write and read storage.	vs	UFS 2.1
+Dynamic AMOLEDAdvantage Dynamic AMOLED display is brighter and more vivid	vs	P-OLED
+HDR10+Advantage The HDR10+ display provides vibrant colors and more details	vs	HDR10
+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.	vs	60Hz
+1440x3200 pixels90% Higher resolution screen	vs	1080x2248 pixels
+516 PPI28% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	402 PPI
+6.8"10% Larger screen	vs	6.21"
+(quad camera) 108MP + 10MP + 10MP + 12MP3 times Higher resolution main camera	vs	(triple camera) 12MP + 12MP + 13MP
+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness	vs	Not supported
+(front) 40MP4 times Higher resolution secondary camera to take pictures and selfies	vs	(dual front camera) 8MP + 0.3MP
+8K UHD (7680x4320)3 times More image quality for recording videos with the primary camera	vs	4K UHD (3840x2160)
+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera	vs	(front) Full HD (1920x1080)
+Android 15Advantage Android 15 is newer and safer	vs	Android 12
+5G Sub6Advantage The 5G Sub6 network is newer and faster	vs	4G LTE-A
+(5G Sub6) 5000 Mbps2 times Faster for surfing the internet and download files	vs	(4G LTE-A) 1600 Mbps
+UWB (Ultra Wideband)Advantage Sensors help you use the device	vs	Not supported
+5000 mAh41% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3550 mAh
+25W39% 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.	vs	18W
+1 slot (Single-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (hybrid slot/shares the same microSD slot)
+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster	vs	802.11 a/b/g/n/ac [wifi5]
+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster	vs	5.0 + A2DP/LE
+USB 3.2 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	USB 2.0 Type-C, USB OTG On-The-Go
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
227 grams (7.95 ounces)	vs	+181 grams (6.34 ounces)25% Lighter
8.9 millimeters (0.35 inches)	vs	+8 millimeters (0.31 inches)11% Thinner
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores

32 Common items in both devices

Aluminum frame, glass front/back

16 million

LED flash

Digital and optical zoom

PDAF: phase detection autofocus on both cameras / PDAF on back camera and autofocus front camera

OIS: Optical stabilization

HDR photo/video on both cameras / HDR photo/video and HDR photo on front camera

+25 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
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Change model		Choose the model
Model	Galaxy S21 Ultra (SM-G998U1 256GB)	G8S ThinQ (G810RA)
Other model names	Galaxy S21 Ultra 5G (SM-G998U1) Unlocked	LG G8S LMG810RA, LM-G810RA
Country or region available	USA	Argentina, Mexico
Brand	Samsung	LG
Release date	1/29/2021, Announced: 1/14/2021	6/1/2019, Announced: 2/24/2019
Depth	8.9 millimeters (0.35 inches)	8 millimeters (0.31 inches)
Size (width x height)	75.6 x 165.1 millimeters (2.98 x 6.5 in)	155.3 x 76.6 millimeters (6.11 x 3.02 in)
Weight	227 grams (7.95 ounces)	181 grams (6.34 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum frame, glass front/back
Protection against water and others	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Display type	Dynamic AMOLED	P-OLED
Screen size	6.8" inches	6.21" inches
Screen-to-body ratio	~89.4% (screen-to-body ratio)	~81.6% (screen-to-body ratio)
Display resolution	1440x3200 pixels (20:9)	1080x2248 pixels
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	516 PPI	402 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass Victus	Gorilla Glass 5
Refresh rate	120Hz	60Hz
Display features	1500nits[peak] HDR10+ Always-On Display	HDR10 100% DCI-P3 Always-On Display
🤖 Operating System
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
System version	Android 11	Android 9.0 Pie
Firmware update	Android 15	Android 12
User Interface	One UI 3.1 / 4.1 / 5.1 / 6.0 / 7.0	LG UX 8.0 / 9.0 / 10
⚙️ Processor
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Chipset	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)	64bit: Qualcomm Snapdragon 855 (SM8150) (7nm)
CPU	Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core)	Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (Quad-core)
GPU graphical controller	Qualcomm Adreno 660 (840MHz)	Qualcomm Adreno 640 (585MHz)
Performance (benchmark)	AnTuTu: 681099 (v8), 809165 (v9) Geekbench: 3539 (v5.2) GFXBench: 54fps (ES 3.1 onscreen)	feature not registered
💽 Memory and storage
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
RAM memory	12GB LPDDR5	6GB LPDDR4X
Internal storage	256GB (220GB available) UFS 3.1	128GB (104GB available) UFS 2.1
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Not supported
SIM card	1 slot (Single-SIM) nano-SIM (4FF) + e-SIM	1 slot (Single-SIM) nano-SIM (4FF)
Maximum Download / Upload	5000/1920 Mbps	1600/150 Mbps
Network technology	2G, 3G, 4G, 5G	2G, 3G, 4G
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	CDMA 800/1900, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE 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 Cat19 (2, 3, 4, 5, 7, 8, 12, 13, 17, 26, 28, 66) TD-LTE (38, 41)
Primary 5G network	SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261)	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	CDMA 800/1900, GSM 850/900/1800/1900	Not supported
Secondary 3G network	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100	Not supported
Secondary 4G network	LTE 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 network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	Not supported
📷 Camera
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Back camera (main camera)	(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	(triple camera) 12 megapixels 12MP telephoto f/2.649mm1.0µmPDAF2x-optical-zoom 13MP ultrawide f/2.414mm1.0µm
Main camera resolution	12000x9000 pixels	4000x3000 pixels
Video recording (primary)	8K UHD (7680x4320) 24 fps	4K UHD (3840x2160) 60 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm (lens)	27mm (lens)
Sensor size	1/1.33" inches	feature not registered
Pixel size	1.8µm pixel	1.4µm pixel
Autofocus	PDAF: phase detection autofocus on both cameras	PDAF on back camera and autofocus front camera
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	OIS: Optical stabilization
Zoom	Digital and optical zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Not supported
HDR	HDR photo/video on both cameras	HDR photo/video and HDR photo on front camera
Camera extras	4K@60fps 1080p@240fps 720p@960fps	4K@30/60fps 1080p@30/60fps 1080p@240fps (slow motion)
📸 Front camera
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Front camera (secondary)	40 megapixels	(dual front camera) 8 megapixels 0.3MP TOF f/1.4
Front camera resolution	7296x5472 pixels	3264x2448 pixels
Video recording (secondary)	4K UHD (3840x2160)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/1.9 (aperture)
Focal length	26mm (lens)	26mm (lens)
Sensor size	1/2.8" inches	feature not registered
Pixel size	0.7µm pixel	1.12µm pixel
🔉 Sound and multimedia
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Loudspeaker	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG	Stereo sound 32-bit/384kHz DTS:X
Active noise cancellation	3 microphones	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
USB	USB 3.2 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	USB Type-C (reversible)
Bluetooth	5.2 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (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
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Sensors	Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband)	Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gesture Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	3550 mAh
Charger, watts	25W Wired fast charging USB Power Delivery 3.0	18W Wired fast charging Quick Charge 3 USB Power Delivery 2.0
Inductive / wireless charging	15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging	Qi wireless charging
Talk time autonomy	feature not registered	22 hours
Standby	feature not registered	412 hours (17.2 days)
➕ Other features
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder
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: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support	• Colors: Mirror Black, Mirror Teal, Mirror White
☢️ Radiation rate
	Galaxy S21 Ultra (SM-G998U1 256GB)	LG G8S ThinQ (G810RA)
SAR 1.6W/kg (USA, Mexico, etc.)	0.77W/kg (head), 1.02W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered