Samsung Galaxy Y Duos (GT-S6102) vs Samsung Galaxy S21 Ultra (SM-G998U1 512GB)

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

11/14/2021 5:18 PM, updated: 11/21/2023 5:01 AM

Compare Samsung Galaxy S21 Ultra X Samsung Galaxy Y Duos (GT-S6102) 04Points

Specifications Compare Models Pictures

3.14"
TFT

240x320

3.1
MP

384MB
RAM

Single-core

1300
mAh

(Removable)

42Points Samsung Galaxy S21 Ultra (SM-G998U1 512GB) Compare Samsung Galaxy Y Duos X

Specifications Compare Models Pictures

6.8"
AMOLED

1440x3200

108
MP

40mp

16GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 Ultra (SM-G998U1 512GB)

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!

4 Advantages Samsung Galaxy Y Duos (GT-S6102)	vs	42 Advantages Samsung Galaxy S21 Ultra (SM-G998U1 512GB)
+Until 32GB microSD, microSDHCAdvantage More external storage for files using memory cards	vs	Not supported
+109 grams (3.82 ounces)108% Lighter	vs	227 grams (7.95 ounces)
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	LiPo: li-ion polymer (Non removable)
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
832MHz 32bit Single-core (65nm)	vs	+2.84GHz 64bit Octa-core (5nm)6 times More powerful processor, you can open your applications faster
384MB LPDDR	vs	+16GB LPDDR542 times More RAM memory. Typically more responsive and better for multitasking.
512MB (160MB available)	vs	+512GB (457GB available)2924 times More internal storage for applications and files
12 millimeters (0.47 inches)	vs	+8.9 millimeters (0.35 inches)35% Thinner
Plastic body, glass front	vs	+Aluminum frame, glass front/backAdvantage More resistant material
TFT LCD	vs	+Dynamic AMOLEDAdvantage Dynamic AMOLED display is brighter and more vivid
Not supported	vs	+HDR10+Advantage The HDR10+ display provides vibrant colors and more details
60Hz	vs	+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
260 thousand	vs	+16 million61 times More colors on the screen is better quality images and videos
240x320 pixels	vs	+1440x3200 pixels59 times Higher resolution screen
127 PPI	vs	+516 PPI3 times Crisper display of text, images and videos because it has more pixels per inch (ppi)
3.14"	vs	+6.8"117% Larger screen
(back) 3.1MP	vs	+(quad camera) 108MP + 10MP + 10MP + 12MP44 times Higher resolution main camera
Not supported	vs	+LED flashAdvantage The LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
Not supported	vs	+PDAF: phase detection autofocus on both camerasAdvantage Best autofocus type for taking pictures
Not supported	vs	+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Not supported	vs	+HDR photo/video on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
Not supported	vs	+(front) 40MPAdvantage A front-camera is best for taking selfies
QVGA (320x240)	vs	+8K UHD (7680x4320)431 times More image quality for recording videos with the primary camera
Android 2.3.6 Gingerbread	vs	+Android 14Advantage Android 14 is newer and safer
3G HSDPA	vs	+5G Sub6Advantage The 5G Sub6 network is newer and faster
(3G HSDPA) 7.2 Mbps	vs	+(5G Sub6) 5000 Mbps693 times Faster for surfing the internet and download files
Not supported	vs	+Ambient light sensorAdvantage Sensors help you use the device
Not supported	vs	+BarometerAdvantage Sensors help you use the device
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (under display)Advantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
Not supported	vs	+UWB (Ultra Wideband)Advantage Sensors help you use the device
1300 mAh	vs	+5000 mAh3 times Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
3.5W	vs	+25W6 times 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.
Not supported	vs	+Qi wireless charging (Qi/PMA)Advantage Wireless charging is another way to charge the battery.
2 slots (Dual-SIM) (dedicated slot)	vs	+1 slot (Single-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.
802.11 b/g/n [wifi4]	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
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
3.0 + A2DP	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0	vs	+USB 3.2 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.
MicroUSB 2.0	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.
HTML, XHTML, Flash player	vs	+HTML, XHTML, HTML5Advantage Better sites viewing on the internet
Not supported	vs	+Gorilla Glass VictusAdvantage Protection against scratches on the screen lets you carry your phone with your keys
Not supported	vs	+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

7 Common items in both devices

Capacitive

Multitouch

Accelerometer

Compass

Proximity sensor

FM (RDS) / FM

A-GPS, GeoTagging / A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou

+ 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 Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Change model		Choose the model
Model	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Other model names	Galaxy Young Duos S6102	Galaxy S21 Ultra 5G (SM-G998U1) Unlocked
Country or region available	(Europe), (Global, International)	USA
Brand	Samsung	Samsung
Release date	1/1/2012, Announced: 12/17/2011	1/29/2021, Announced: 1/14/2021
Depth	12 millimeters (0.47 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	60 x 109.8 millimeters (2.36 x 4.32 in)	75.6 x 165.1 millimeters (2.98 x 6.5 in)
Weight	109 grams (3.82 ounces)	227 grams (7.95 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, glass front/back
Protection against water and others	Not supported	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Display type	TFT LCD	Dynamic AMOLED
Screen size	3.14" inches	6.8" inches
Screen-to-body ratio	~46.3% (screen-to-body ratio)	~89.4% (screen-to-body ratio)
Display resolution	240x320 pixels (4:3)	1440x3200 pixels (20:9)
Touchscreen	Capacitive Multitouch 2-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	127 PPI	516 PPI
Colors	260 thousand	16 million
Scratch-resistant glass	Not supported	Gorilla Glass Victus
Refresh rate	60Hz	120Hz
Display features	Not supported	1500nits[peak] HDR10+ Always-On Display
🤖 Operating System
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
System version	Android 2.3.6 Gingerbread	Android 11
Firmware update	feature not registered	Android 14
User Interface	feature not registered	One UI 3.1 / 4.1 / 5.1 / 6.0
⚙️ Processor
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Chipset	32bit: Broadcom BCM21553 (65nm)	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)
CPU	Single-core, 1 processor: 1x 832MHz ARM1136 (Single-core)	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)
GPU graphical controller	VideoCore IV	Qualcomm Adreno 660 (840MHz)
Performance (benchmark)	feature not registered	AnTuTu: 681099 (v8), 809165 (v9) Geekbench: 3539 (v5.2) GFXBench: 54fps (ES 3.1 onscreen)
💽 Memory and storage
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
RAM memory	384MB LPDDR	16GB LPDDR5
Internal storage	512MB (160MB available)	512GB (457GB available) UFS 3.1
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Not supported
📶 Mobile networks
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card
SIM card	2 slots (Dual-SIM) Standard mini-SIM (2FF)	1 slot (Single-SIM) nano-SIM (4FF) + e-SIM
Maximum Download / Upload	7.2 Mbps	5000/1920 Mbps
Network technology	2G, 3G	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	CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G network	UMTS 900/2100	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Primary 4G network	Not supported	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
Primary 5G network	Not supported	SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261)
Primary data network	CSD, GPRS, EDGE, UMTS, HSDPA	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
Secondary 2G network	GSM 850/900/1800/1900	CDMA 800/1900, GSM 850/900/1800/1900
Secondary 3G network	Not supported	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	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
Secondary data network	CSD, GPRS, EDGE	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
📷 Camera
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Back camera (main camera)	3.1 megapixels	(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	2048x1536 pixels	12000x9000 pixels
Video recording (primary)	QVGA (320x240) 24 fps	8K UHD (7680x4320) 24 fps
Flash	Not supported	LED flash
Focal aperture	feature not registered	f/1.8 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/1.33" inches
Pixel size	feature not registered	1.8µm pixel
Autofocus	Not supported	PDAF: phase detection autofocus on both cameras
Touch focus	Not supported	Supported
Image stabilization	Not supported	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	Not supported	HDR photo/video on both cameras
Camera extras	feature not registered	4K@60fps 1080p@240fps 720p@960fps
📸 Front camera
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Front camera (secondary)	Not supported	40 megapixels
Front camera resolution	Not supported	7296x5472 pixels
Video recording (secondary)	Not supported	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	feature not registered	f/2.2 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.7µm pixel
🔉 Sound and multimedia
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG
Active noise cancellation	Not supported	2 microphones or more
Radio	FM (RDS)	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, 3GP, MPEG4, WMV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, eAAC+	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
USB	MicroUSB 2.0	USB 3.2 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	Not supported	USB Type-C (reversible)
Bluetooth	3.0 + A2DP	5.2 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Sensors	Accelerometer Compass Proximity sensor	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband)
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Battery type	Li-Ion: lithium-ion (Removable) EB464358VU	LiPo: li-ion polymer (Non removable)
Battery capacity	1300 mAh	5000 mAh
Charger, watts	3.5W (5V/0.7A) Wired charging	25W Wired fast charging USB Power Delivery 3.0
Inductive / wireless charging	Not supported	15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging
Talk time autonomy	6.2 hours	feature not registered
Standby	440 hours (18.3 days)	feature not registered
➕ Other features
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
Call control	Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (Swype), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Not supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, Flash player	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Black, White • 2GB microSD included • Samsung Kies synchronization • Samsung TouchWiz UI • WiFi hotspot • Java framework	• Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support
☢️ Radiation rate
	Galaxy Y Duos (GT-S6102)	Galaxy S21 Ultra (SM-G998U1 512GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.77W/kg (head), 1.02W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered