Samsung Galaxy S8 Plus (SM-G955A) vs Samsung Galaxy A40 (SM-A405FN/DS)

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Side by side comparison between Samsung Galaxy S8 Plus vs Samsung Galaxy A40 phones, differences, pros, cons and full specifications. What's the better?

4/30/2019 8:57 PM, updated: 11/3/2021 7:02 AM

Compare Samsung Galaxy A40 X Samsung Galaxy S8 Plus (SM-G955A) 18Points

Specifications Compare Models Pictures

6.2"
AMOLED

1440x2960

12.2
MP

8mp

4GB
RAM

Octa-core

3500
mAh

(Non removable)

05Points Samsung Galaxy A40 (SM-A405FN/DS) Compare Samsung Galaxy S8 Plus X

Specifications Compare Models Pictures

5.9"
AMOLED

1080x2340

16
MP

25mp

4GB
RAM

Octa-core

3100
mAh

(Non removable)

What's the better phone? Samsung Galaxy S8 Plus (SM-G955A)

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!

18 Advantages Samsung Galaxy S8 Plus (SM-G955A)	vs	5 Advantages Samsung Galaxy A40 (SM-A405FN/DS)
+2.35GHz 64bit Octa-core (10nm)56% More powerful processor, you can open your applications faster	vs	1.8GHz 64bit Octa-core
+UFS 2.0Advantage Fastest write and read storage.	vs	eMMC 5.1
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+1440x2960 pixels69% Higher resolution screen	vs	1080x2340 pixels
+531 PPI22% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	437 PPI
+6.2"5% Larger screen	vs	5.9"
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(front) 2K UHD (2560x1440)78% More image quality for recording videos with the secondary camera	vs	(front) Full HD (1920x1080)
+(4G LTE-A) 1024 Mbps71% Faster for surfing the internet and download files	vs	(4G LTE-A) 600 Mbps
+BarometerAdvantage Sensors help you use the device	vs	Not supported
+Heart rateAdvantage Sensors help you use the device	vs	Not supported
+Iris scannerAdvantage Sensors help you use the device	vs	Not supported
+SpO2Advantage Sensors help you use the device	vs	Not supported
+3500 mAh13% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3100 mAh
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
173 grams (6.06 ounces)	vs	+140 grams (4.9 ounces)24% Lighter
8.1 millimeters (0.32 inches)	vs	+7.9 millimeters (0.31 inches)3% Thinner
(back) 12.2MP	vs	+(dual camera) 16MP + 5MP72% Higher resolution main camera
(front) 8MP	vs	+(front) 25MP2 times Higher resolution secondary camera to take pictures and selfies
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.

32 Common items in both devices

4GB LPDDR4 / 4GB LPDDR4X

64GB (51GB available) / 64GB (49GB available)

Until 1TB microSD, microSDXC

Super AMOLED

16 million

LED flash

Only digital zoom

+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 S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Change model		Choose the model
Model	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Other model names	AT&T Galaxy S8+ G955A (Snapdragon), Samsung Dream 2	Galaxy A40 SM-A405FN/Dual-Sim
Country or region available	USA	(Europe), (Global, International)
Brand	Samsung	Samsung
Release date	4/21/2017, Announced: 3/29/2017	4/10/2019
Depth	8.1 millimeters (0.32 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	73.4 x 160 millimeters (2.89 x 6.3 in)	69.2 x 144.4 millimeters (2.72 x 5.69 in)
Weight	173 grams (6.06 ounces)	140 grams (4.9 ounces)
Build, materials	Aluminum frame, glass front/back	Plastic body, glass front
Protection against water and others	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant	Not supported
📲 Display
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Display type	Super AMOLED	Super AMOLED
Screen size	6.2" inches	5.9" inches
Screen-to-body ratio	~83.1% (screen-to-body ratio)	~85.5% (screen-to-body ratio)
Display resolution	1440x2960 pixels (18.5:9)	1080x2340 pixels
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	531 PPI	437 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Not supported
Refresh rate	60Hz	feature not registered
Display features	HDR10	feature not registered
🤖 Operating System
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
System version	Android 7.0 Nougat	Android 9.0 Pie
Firmware update	Android 9.0 Pie	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Chipset	64bit: Qualcomm Snapdragon 835 (MSM8998) (10nm)	64bit: Samsung Exynos 7 Octa 7885 (14nm)
CPU	Octa-core, 2 processors: 4x 2.35GHz Kryo 280 (Quad-core) 4x 1.9GHz Kryo 280 (Quad-core)	Octa-core, 2 processors: 2x 1.8GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core)
GPU graphical controller	Qualcomm Adreno 540 (670-710MHz)	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
RAM memory	4GB LPDDR4	4GB LPDDR4X
Internal storage	64GB (51GB available) UFS 2.0	64GB (49GB available) eMMC 5.1
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	1024/150 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	TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat16 (1,2,3,4,5,7,8,12,18,19,20,28,29,30) TD-LTE (38,39,40,41)	LTE Cat12/13 (Bands 1, 3, 5, 7, 8, 20) TD-LTE (Bands 38, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	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 S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Back camera (main camera)	12.2 megapixels	(dual camera) 16 megapixels 5MP ultrawide f/2.213mmFF
Main camera resolution	4032x3024 pixels	4608x3456 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.7 (aperture)	f/1.7 (aperture)
Focal length	26mm lens	26mm lens
Sensor size	1/2.55" inches	feature not registered
Pixel size	1.4µm pixel	feature not registered
Autofocus	PDAF on back camera and autofocus front camera	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital 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 on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Front camera (secondary)	8 megapixels	25 megapixels
Front camera resolution	3264x2448 pixels	5760x4320 pixels
Video recording (secondary)	2K UHD (2560x1440)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/1.7 (aperture)	f/2.0 (aperture)
Focal length	25mm lens	25mm lens
Sensor size	1/3.6" inches	feature not registered
Pixel size	1.22µm pixel	feature not registered
🔉 Sound and multimedia
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.264, H.263, WMV, MKV
Audio formats	MP3, WAV, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
USB	USB 3.1 Type-C, USB OTG On-The-Go	USB 3.1 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + 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 [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Supported	Not 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 S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Sensors	Accelerometer Ambient light sensor ANT+ Barometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Hall effect Heart rate Iris scanner Proximity sensor SpO2	Accelerometer Ambient light sensor ANT+ Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3500 mAh	3100 mAh
Charger, watts	15W (9V/1.67A) Wired fast charging Quick Charge 2	15W Wired fast charging
Inductive / wireless charging	Qi wireless charging (Qi/PMA)	feature not registered
Talk time autonomy	34 hours (1.4 days)	18 hours
Standby	343 hours (14.3 days)	feature not registered
➕ Other features
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
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: Black, Silver, Blue, Gold, Orchid Gray • Samsung DeX (desktop experience) • Curved edge screen • Corning Gorilla Glass 5 back panel • Samsung Gear VR compatible • Samsung Pay • 32bit/192kHz audio	• Colors: Black, White, Blue, Coral • 19.5:9 display ratio FHD+ • One UI
☢️ Radiation rate
	Galaxy S8 Plus (SM-G955A)	Galaxy A40 (SM-A405FN/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.49W/kg (head), 1.34W/kg (body)