Samsung Galaxy S3 Slim Duos (SM-G3812B) vs Samsung Galaxy A15 (SM-A155M/N 256GB)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Samsung Galaxy S3 Slim vs Samsung Galaxy A15 phones, differences, pros, cons and full specifications. What's the better?

3/18/2024 5:17 PM, updated: 3/18/2024 7:37 PM

Compare Samsung Galaxy A15 X Samsung Galaxy S3 Slim Duos (SM-G3812B) 05Points

Specifications Compare Models Pictures

4.5"
TFT

540x960

5
MP

0.3mp

1GB
RAM

Quad-core

2100
mAh

(Removable)

23Points Samsung Galaxy A15 (SM-A155M/N 256GB) Compare Samsung Galaxy S3 Slim X

Specifications Compare Models Pictures

6.5"
AMOLED

1080x2340

50
MP

13mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A15 (SM-A155M/N 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!

5 Advantages Samsung Galaxy S3 Slim Duos (SM-G3812B)	vs	23 Advantages Samsung Galaxy A15 (SM-A155M/N 256GB)
+139 grams (4.87 ounces)44% Lighter	vs	200 grams (7 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)
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
1.2GHz 32bit Quad-core	vs	+2.2GHz 64bit Octa-core (6nm)150% More powerful processor, you can open your applications faster
1GB LPDDR2	vs	+8GB LPDDR4X7 times More RAM memory. Typically more responsive and better for multitasking.
8GB (5GB available)	vs	+256GB (236GB available)46 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
9.7 millimeters (0.38 inches)	vs	+8.4 millimeters (0.33 inches)15% Thinner
TFT LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
540x960 pixels	vs	+1080x2340 pixels4 times Higher resolution screen
245 PPI	vs	+396 PPI62% Crisper display of text, images and videos because it has more pixels per inch (ppi)
4.5"	vs	+6.5"44% Larger screen
(back) 5MP	vs	+(triple camera) 50MP + 5MP + 2MP10 times Higher resolution main camera
HDR photo only main camera	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
(front) 0.3MP	vs	+(front) 13MP41 times Higher resolution secondary camera to take pictures and selfies
(front) VGA (640x480)	vs	+(front) Full HD (1920x1080)6 times More image quality for recording videos with the secondary camera
Android 4.2.2 Jelly Bean	vs	+Android 14Advantage Android 14 is newer and safer
3G+ HSPA+	vs	+4G LTE-AAdvantage The 4G LTE-A network is newer and faster
(3G+ HSPA+) 21 Mbps	vs	+(4G LTE-A) 300 Mbps13 times Faster for surfing the internet and download files
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (side-mounted)Advantage Sensors help you use the device
2100 mAh	vs	+5000 mAh138% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
802.11 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
4.0 + A2DP	vs	+5.3 + A2DP/LEAdvantage Bluetooth 5.3 + 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	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.

17 Common items in both devices

Plastic body, glass front

16 million

LED flash

Only digital zoom

Autofocus

EIS: Digital stabilization

Full HD (1920x1080)

+10 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 S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Change model		Choose the model
Model	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Other model names	Galaxy S3 Slim G3812B, Samsung Galaxy Win Pro	Galaxy A15 4G LTE SM-A155M/NFC (Single-SIM)
Country or region available	Brazil	(Latin America), Peru
Brand	Samsung	Samsung
Release date	3/1/2014	12/16/2023, Announced: 12/11/2023
Depth	9.7 millimeters (0.38 inches)	8.4 millimeters (0.33 inches)
Size (width x height)	66 x 133 millimeters (2.6 x 5.24 in)	76.8 x 160.1 millimeters (3.02 x 6.3 in)
Weight	139 grams (4.87 ounces)	200 grams (7 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Display type	TFT LCD	Super AMOLED
Screen size	4.5" inches	6.5" inches
Screen-to-body ratio	~63.6% (screen-to-body ratio)	~84.3% (screen-to-body ratio)
Display resolution	540x960 pixels	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	245 PPI	396 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	90Hz
Display features	feature not registered	800nits[peak]
🤖 Operating System
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
System version	Android 4.2.2 Jelly Bean	Android 14
Firmware update	feature not registered	feature not registered
User Interface	feature not registered	One UI 6.1
⚙️ Processor
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Chipset	32bit: Qualcomm Snapdragon 200 MSM8225Q	64bit: MediaTek Helio G99 (6nm)
CPU	Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A5 (Quad-core)	Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A76 (Dual-core) 6x 2GHz ARM Cortex-A55 (Hexa-core)
GPU graphical controller	Qualcomm Adreno 203	ARM Mali-G57 MC2
Performance (benchmark)	feature not registered	AnTuTu: 317085 (v9), 375321 (v10) Geekbench: 1928 (v5), 1936 (v6)
💽 Memory and storage
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
RAM memory	1GB LPDDR2	8GB LPDDR4X
Internal storage	8GB (5GB available)	256GB (236GB available) eMMC 5.1
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Not supported
SIM card	2 slots (Dual-SIM) micro-SIM (3FF)	1 slot (Single-SIM) nano-SIM (4FF)
Maximum Download / Upload	21/5.76 Mbps	300/150 Mbps
Network technology	2G, 3G	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 850/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	Not supported	LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 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+	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Back camera (main camera)	5 megapixels	(triple camera) 50 megapixels 5MP ultrawide f/2.2 2MP macro f/2.4
Main camera resolution	2592x1944 pixels	8160x6120 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash
Focal aperture	feature not registered	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
Autofocus	Autofocus	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	Supported
HDR	HDR photo only main camera	HDR photo on both cameras
Camera extras	feature not registered	1080p@30fps 720p@120fps (slow motion)
📸 Front camera
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Front camera (secondary)	0.3 megapixels	13 megapixels
Front camera resolution	640x480 pixels	4128x3096 pixels
Video recording (secondary)	VGA (640x480)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	feature not registered	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	Not supported	2 microphones or more
Radio	FM	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, 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 S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
USB	MicroUSB 2.0	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	USB Type-C (reversible)
Bluetooth	4.0 + A2DP	5.3 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz) 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, QZSS
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Battery type	Li-Ion: lithium-ion (Removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	2100 mAh	5000 mAh
Charger, watts	Wired charging	25W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	51 hours (2.1 days)
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
Call control	Voice dialing, Voice recorder	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: Black, White • Samsung TouchWiz UX • Java framework	• Colors: Brave Black, Optimistic Blue, Magical Blue, Personality Yellow
☢️ Radiation rate
	Galaxy S3 Slim Duos (SM-G3812B)	Galaxy A15 (SM-A155M/N 256GB)
SAR 1.6W/kg (USA, Mexico, etc.)	0.61W/kg (head), 1.13W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	0.553W/kg (head), 0.395W/kg (body)	feature not registered