Xiaomi Redmi S2 (32GB) vs Samsung Galaxy A40 (SM-A405FM/DS)

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

3/21/2020 3:22 PM, updated: 5/10/2020 5:28 PM

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

Specifications Compare Models Pictures

5.99"
IPS

720x1440

12
MP

16mp

3GB
RAM

Octa-core

3080
mAh

(Non removable)

22Points Samsung Galaxy A40 (SM-A405FM/DS) Compare Xiaomi Redmi S2 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 A40 (SM-A405FM/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!

3 Advantages Xiaomi Redmi S2 (32GB)	vs	22 Advantages Samsung Galaxy A40 (SM-A405FM/DS)
+2GHz 64bit Octa-core33% More powerful processor, you can open your applications faster	vs	1.8GHz 64bit Octa-core
+5.99"2% Larger screen	vs	5.9"
+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light	vs	LED flash
3GB LPDDR3	vs	+4GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.
32GB (21GB available)	vs	+64GB (49GB available)133% More internal storage for applications and files
Until 256GB microSD, microSDXC	vs	+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards
170 grams (5.95 ounces)	vs	+140 grams (4.9 ounces)21% Lighter
8.1 millimeters (0.32 inches)	vs	+7.9 millimeters (0.31 inches)3% Thinner
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
720x1440 pixels	vs	+1080x2340 pixels144% Higher resolution screen
269 PPI	vs	+437 PPI62% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(dual camera) 12MP + 5MP	vs	+(dual camera) 16MP + 5MP23% Higher resolution main camera
f/2.2 (aperture)	vs	+f/1.7 (aperture)29% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 16MP	vs	+(front) 25MP56% Higher resolution secondary camera to take pictures and selfies
(front) HD (1280x720)	vs	+(front) Full HD (1920x1080)125% More image quality for recording videos with the secondary camera
Android 8.1 Oreo	vs	+Android 9.0 PieAdvantage Android 9.0 Pie is newer and safer
(4G LTE-A) 300 Mbps	vs	+(4G LTE-A) 600 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+ANT+Advantage Sensors help you use the device
3080 mAh	vs	+3100 mAh1% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
10W	vs	+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.
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
4.2 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0, USB OTG On-The-Go	vs	+USB 3.1 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.
MicroUSB 2.0, USB OTG On-The-Go	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.

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
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Change model		Choose the model
Model	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Other model names	红米自拍手机S2, Xiaomi S2, Xiaomi Ysl	Galaxy A40 SM-A405FM/Dual-Sim, SM-A405FZKGSER
Country or region available	(Global, International), China	Kazakhstan, Russia
Brand	Xiaomi	Samsung
Release date	5/1/2018	4/10/2019
Depth	8.1 millimeters (0.32 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	77.26 x 160.73 millimeters (3.04 x 6.33 in)	69.2 x 144.4 millimeters (2.72 x 5.69 in)
Weight	170 grams (5.95 ounces)	140 grams (4.9 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Display type	TFT IPS LCD	Super AMOLED
Screen size	5.99" inches	5.9" inches
Screen-to-body ratio	~74.6% (screen-to-body ratio)	~85.5% (screen-to-body ratio)
Display resolution	720x1440 pixels	1080x2340 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	269 PPI	437 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
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
System version	Android 7.1.2 Nougat	Android 9.0 Pie
Firmware update	Android 8.1 Oreo	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Chipset	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)	64bit: Samsung Exynos 7 Octa 7885 (14nm)
CPU	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-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 506 650Mhz	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
RAM memory	3GB LPDDR3	4GB LPDDR4X
Internal storage	32GB (21GB available) eMMC 5.1	64GB (49GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
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	300/50 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	CDMA 800 (China), GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	M1803E6G Global version: UMTS 850/900/1900/2100 M1803E6E, M1803E6C, M1803E6T versions: CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	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)	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, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, 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	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
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Back camera (main camera)	(dual camera) 12 megapixels 5MP depth	(dual camera) 16 megapixels 5MP ultrawide f/2.213mmFF
Main camera resolution	4000x3000 pixels	4608x3456 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash on both cameras	LED flash
Focal aperture	f/2.2 (aperture)	f/1.7 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	feature not registered
Pixel size	1.25µm pixel	feature not registered
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
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Front camera (secondary)	16 megapixels	25 megapixels
Front camera resolution	4608x3456 pixels	5760x4320 pixels
Video recording (secondary)	HD (1280x720)	Full HD (1920x1080)
Front flash	LED	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	25mm (lens)
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/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, XviD, MKV	MP4, H.264, H.263, WMV, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
USB	MicroUSB 2.0, 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	Not supported	Not supported
Bluetooth	4.2 + A2DP	5.0 + 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	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Supported
Infrared port	Supported	Not supported
🧭 Sensors
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3080 mAh	3100 mAh
Charger, watts	10W (5V/2A) Wired charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	feature not registered	18 hours
Standby	feature not registered	feature not registered
➕ Other features
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/DS)
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: Gray, Gold, Rose Gold, Blue, Black • MIUI 10 • 18:9 screen	• Colors: Black, White, Blue, Coral • 19.5:9 display ratio FHD+ • One UI
☢️ Radiation rate
	Redmi S2 (32GB)	Galaxy A40 (SM-A405FM/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)