Samsung Galaxy A40 (SM-A405FN/DS) vs Xiaomi Redmi S2 (32GB)

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Side by side comparison between Samsung Galaxy A40 vs Xiaomi Redmi S2 phones, differences, pros, cons and full specifications. What's the better?

4/30/2019 8:57 PM, updated: 5/10/2020 5:28 PM

Compare Xiaomi Redmi S2 X Samsung Galaxy A40 (SM-A405FN/DS) 22Points

Specifications Compare Models Pictures

5.9"
AMOLED

1080x2340

16
MP

25mp

4GB
RAM

Octa-core

3100
mAh

(Non removable)

03Points Xiaomi Redmi S2 (32GB) Compare Samsung Galaxy A40 X

Specifications Compare Models Pictures

5.99"
IPS

720x1440

12
MP

16mp

3GB
RAM

Octa-core

3080
mAh

(Non removable)

What's the better phone? Samsung Galaxy A40 (SM-A405FN/DS)

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!

22 Advantages Samsung Galaxy A40 (SM-A405FN/DS)	vs	3 Advantages Xiaomi Redmi S2 (32GB)
+4GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.	vs	3GB LPDDR3
+64GB (49GB available)133% More internal storage for applications and files	vs	32GB (21GB available)
+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards	vs	Until 256GB microSD, microSDXC
+140 grams (4.9 ounces)21% Lighter	vs	170 grams (5.95 ounces)
+7.9 millimeters (0.31 inches)3% Thinner	vs	8.1 millimeters (0.32 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	TFT IPS LCD
+1080x2340 pixels144% Higher resolution screen	vs	720x1440 pixels
+437 PPI62% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	269 PPI
+(dual camera) 16MP + 5MP23% Higher resolution main camera	vs	(dual camera) 12MP + 5MP
+f/1.7 (aperture)29% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.2 (aperture)
+(front) 25MP56% Higher resolution secondary camera to take pictures and selfies	vs	(front) 16MP
+(front) Full HD (1920x1080)125% More image quality for recording videos with the secondary camera	vs	(front) HD (1280x720)
+Android 9.0 PieAdvantage Android 9.0 Pie is newer and safer	vs	Android 8.1 Oreo
+(4G LTE-A) 600 Mbps100% Faster for surfing the internet and download files	vs	(4G LTE-A) 300 Mbps
+ANT+Advantage Sensors help you use the device	vs	Not supported
+3100 mAh1% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3080 mAh
+15W50% 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	10W
+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster	vs	802.11 b/g/n [wifi4]
+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster	vs	4.2 + A2DP
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
+USB 3.1 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	MicroUSB 2.0, USB OTG On-The-Go
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0, USB OTG On-The-Go
1.8GHz 64bit Octa-core	vs	+2GHz 64bit Octa-core33% More powerful processor, you can open your applications faster
5.9"	vs	+5.99"2% Larger screen
LED flash	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light

28 Common items in both devices

eMMC 5.1

Plastic body, glass front

16 million

Only digital zoom

PDAF: phase detection autofocus

EIS: Digital stabilization

HDR photo on both cameras

+21 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 A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Change model		Choose the model
Model	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Other model names	Galaxy A40 SM-A405FN/Dual-Sim	红米自拍手机S2, Xiaomi S2, Xiaomi Ysl
Country or region available	(Europe), (Global, International)	(Global, International), China
Brand	Samsung	Xiaomi
Release date	4/10/2019	5/1/2018
Depth	7.9 millimeters (0.31 inches)	8.1 millimeters (0.32 inches)
Size (width x height)	69.2 x 144.4 millimeters (2.72 x 5.69 in)	77.26 x 160.73 millimeters (3.04 x 6.33 in)
Weight	140 grams (4.9 ounces)	170 grams (5.95 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Display type	Super AMOLED	TFT IPS LCD
Screen size	5.9" inches	5.99" inches
Screen-to-body ratio	~85.5% (screen-to-body ratio)	~74.6% (screen-to-body ratio)
Display resolution	1080x2340 pixels	720x1440 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	437 PPI	269 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
System version	Android 9.0 Pie	Android 7.1.2 Nougat
Firmware update	feature not registered	Android 8.1 Oreo
User Interface	feature not registered	feature not registered
⚙️ Processor
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Chipset	64bit: Samsung Exynos 7 Octa 7885 (14nm)	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)
CPU	Octa-core, 2 processors: 2x 1.8GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core)	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)
GPU graphical controller	ARM Mali-G71 MP2	Qualcomm Adreno 506 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
RAM memory	4GB LPDDR4X	3GB LPDDR3
Internal storage	64GB (49GB available) eMMC 5.1	32GB (21GB available) eMMC 5.1
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	600/150 Mbps	300/50 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	CDMA 800 (China), GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	M1803E6G Global version: UMTS 850/900/1900/2100 M1803E6E, M1803E6C, M1803E6T versions: CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100
Primary 4G network	LTE Cat12/13 (Bands 1, 3, 5, 7, 8, 20) TD-LTE (Bands 38, 40, 41)	LTE Cat6 M1803E6G Global version: LTE (Bands 1,3,4,5,7,8,20) TD-LTE (Bands 38,40) M1803E6E, M1803E6C, M1803E6T versions: LTE (Bands 1,3,5,7,8) TD-LTE (Bands 34,38,39,40,41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Back camera (main camera)	(dual camera) 16 megapixels 5MP ultrawide f/2.213mmFF	(dual camera) 12 megapixels 5MP depth
Main camera resolution	4608x3456 pixels	4000x3000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash on both cameras
Focal aperture	f/1.7 (aperture)	f/2.2 (aperture)
Focal length	26mm (lens)	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	1.25µm pixel
Autofocus	PDAF: phase detection 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	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Front camera (secondary)	25 megapixels	16 megapixels
Front camera resolution	5760x4320 pixels	4608x3456 pixels
Video recording (secondary)	Full HD (1920x1080)	HD (1280x720)
Front flash	Not supported	LED
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	25mm (lens)	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
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.264, H.263, WMV, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
USB	USB 3.1 Type-C, USB OTG On-The-Go	MicroUSB 2.0, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	5.0 + A2DP/LE	4.2 + A2DP
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Sensors	Accelerometer Ambient light sensor ANT+ Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3100 mAh	3080 mAh
Charger, watts	15W Wired fast charging	10W (5V/2A) Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	18 hours	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
Call control	Voice dialing, Voice recorder	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, White, Blue, Coral • 19.5:9 display ratio FHD+ • One UI	• Colors: Gray, Gold, Rose Gold, Blue, Black • MIUI 10 • 18:9 screen
☢️ Radiation rate
	Galaxy A40 (SM-A405FN/DS)	Redmi S2 (32GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	0.49W/kg (head), 1.34W/kg (body)	feature not registered