Samsung Galaxy S2 LTE (GT-i9210) vs Samsung Galaxy A51 (SM-A515F/DSN)

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Side by side comparison between Samsung Galaxy S2 LTE vs Samsung Galaxy A51 phones, differences, pros, cons and full specifications. What's the better?

1/4/2020 2:03 PM, updated: 11/21/2022 8:39 AM

Compare Samsung Galaxy A51 X Samsung Galaxy S2 LTE (GT-i9210) 04Points

Specifications Compare Models Pictures

4.5"
AMOLED

480x800

8
MP

2mp

1GB
RAM

Dual-core

1850
mAh

(Removable)

27Points Samsung Galaxy A51 (SM-A515F/DSN) Compare Samsung Galaxy S2 LTE X

Specifications Compare Models Pictures

6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A51 (SM-A515F/DSN)

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 S2 LTE (GT-i9210)	vs	27 Advantages Samsung Galaxy A51 (SM-A515F/DSN)
+132 grams (4.62 ounces)30% Lighter	vs	172 grams (6.02 ounces)
+Proximity sensorAdvantage Sensors help you use the device	vs	Virtual proximity sensor
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	LiPo: li-ion polymer (Non removable)
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
1.5GHz 32bit Dual-core	vs	+2.3GHz 64bit Octa-core (10nm)108% More powerful processor, you can open your applications faster
1GB LPDDR2	vs	+6GB LPDDR4X5 times More RAM memory. Typically more responsive and better for multitasking.
16GB (14GB available)	vs	+128GB (107GB available)7 times More internal storage for applications and files
Until 32GB microSD, microSDHC	vs	+Until 1TB microSD, microSDXC31 times More external storage for files using memory cards
9.4 millimeters (0.37 inches)	vs	+7.9 millimeters (0.31 inches)19% Thinner
480x800 pixels	vs	+1080x2400 pixels6 times Higher resolution screen
207 PPI	vs	+405 PPI96% Crisper display of text, images and videos because it has more pixels per inch (ppi)
4.5"	vs	+6.5"44% Larger screen
(back) 8MP	vs	+(quad camera) 48MP + 12MP + 5MP + 5MP8 times Higher resolution main camera
Not supported	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
1/3.2" inches	vs	+1/2" inches60% The larger sensor camera lets you take photos with better depth.
f/2.6 (aperture)	vs	+f/2.0 (aperture)30% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 2MP	vs	+(front) 32MP16 times Higher resolution secondary camera to take pictures and selfies
Full HD (1920x1080)	vs	+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera
(front) VGA (640x480)	vs	+(front) 4K UHD (3840x2160)26 times More image quality for recording videos with the secondary camera
Android 4.1.2 Jelly Bean	vs	+Android 13Advantage Android 13 is newer and safer
(4G LTE) 100 Mbps	vs	+(4G LTE-A) 600 Mbps5 times Faster for surfing the internet and download files
Not supported	vs	+ANT+Advantage 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
1850 mAh	vs	+4000 mAh116% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
1 slot (Single-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.
Not supported	vs	+FM (RDS)Advantage The radio lets you listen to your songs and sports in general
802.11 a/b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
3.0 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster
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

18 Common items in both devices

Super AMOLED Plus / Super AMOLED

16 million

LED flash

Only digital zoom

Autofocus / PDAF: phase detection autofocus

EIS: Digital stabilization

4G LTE / 4G LTE-A

+11 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 S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Change model		Choose the model
Model	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Other model names	Samsung Galaxy S2 LTE EU GT-i9210, Samsung Celox	Samsung Galaxy A51 SM-A515F/DSN
Country or region available	(Europe)	(Europe), (Global, International), United Arab Emirates, Pakistan, Taiwan
Brand	Samsung	Samsung
Release date	11/1/2011	12/16/2019, Announced: 12/12/2019
Depth	9.4 millimeters (0.37 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	69.9 x 130.9 millimeters (2.75 x 5.15 in)	73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight	132 grams (4.62 ounces)	172 grams (6.02 ounces)
Build, materials	feature not registered	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Display type	Super AMOLED Plus	Super AMOLED
Screen size	4.5" inches	6.5" inches
Screen-to-body ratio	~63% (screen-to-body ratio)	~87.4% (screen-to-body ratio)
Display resolution	480x800 pixels	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	207 PPI	405 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass	Gorilla Glass 3
Refresh rate	feature not registered	60Hz
Display features	feature not registered	Always-On Display
🤖 Operating System
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
System version	Android 2.3.7 Gingerbread	Android 10
Firmware update	Android 4.1.2 Jelly Bean	Android 13
User Interface	feature not registered	One UI 2.5 / 3.1 / 4.1 / 5.0
⚙️ Processor
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Chipset	32bit: Qualcomm Snapdragon S3 APQ8060	64bit: Samsung Exynos 9611 (10nm)
CPU	Dual-core, 1 processor: 2x 1.5GHz Scorpion (Dual-core)	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 220	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
RAM memory	1GB LPDDR2	6GB LPDDR4X
Internal storage	16GB (14GB available)	128GB (107GB available) eMMC 5.1
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	100/50 Mbps	600/150 Mbps
Network technology	2G, 3G, 4G	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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat3 800/1800/2600 (Bands 3,7,20)	LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
📷 Camera
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Back camera (main camera)	8 megapixels	(quad camera) 48 megapixels 12MP ultrawide f/2.213mm1.12µm 5MP telephoto f/2.440mm 5MP depth f/2.21/5.0"1.12µm
Main camera resolution	3264x2448 pixels	8000x6000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/2.6 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	1/3.2" inches	1/2" inches
Pixel size	feature not registered	0.8µm pixel
Autofocus	Autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	Not supported	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Front camera (secondary)	2 megapixels	32 megapixels
Front camera resolution	1600x1200 pixels	6528x4896 pixels
Video recording (secondary)	VGA (640x480)	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	0.8µm pixel
🔉 Sound and multimedia
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, DivX, XviD, H.263, H.264, WMV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, AC3, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
USB	MicroUSB 2.0	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Micro-B USB MHL	Not supported
Bluetooth	3.0 + A2DP	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Sensors	Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Battery type	Li-Ion: lithium-ion (Removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	1850 mAh	4000 mAh
Charger, watts	Wired charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	5 hours	feature not registered
Standby	192 hours (8 days)	feature not registered
➕ Other features
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder
Messaging	SMS (Swype), 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, Flash player	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Black • Samsung TouchWiz 4.0 UI • USB On-the-go 1.3 • Touch focus • HAC M3/T3 • DLNA 1.5 • Active noise cancellation with dedicated mic • Java framework	• Colors: Prism, Crush Black, White, Blue, Pink
☢️ Radiation rate
	Galaxy S2 LTE (GT-i9210)	Galaxy A51 (SM-A515F/DSN)
SAR 1.6W/kg (USA, Mexico, etc.)	0.16W/kg (head), 0.66W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	0.409W/kg (head), 0.422W/kg (body)	0.369W/kg (head), 1.59W/kg (body)