Xiaomi Redmi S2 (32GB) vs Samsung Galaxy J7 Duo (SM-J720M)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Xiaomi Redmi S2 vs Samsung Galaxy J7 Duo phones, differences, pros, cons and full specifications. What's the better?

11/4/2018 9:49 PM, updated: 6/13/2022 6:34 PM

Compare Samsung Galaxy J7 Duo X Xiaomi Redmi S2 (32GB) 15Points

Specifications Compare Models Pictures

5.99"
IPS

720x1440

12
MP

16mp

3GB
RAM

Octa-core

3080
mAh

(Non removable)

10Points Samsung Galaxy J7 Duo (SM-J720M) Compare Xiaomi Redmi S2 X

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

3GB
RAM

Octa-core

3000
mAh

(Removable)

What's the better phone? Xiaomi Redmi S2 (32GB)

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!

15 Advantages Xiaomi Redmi S2 (32GB)	vs	10 Advantages Samsung Galaxy J7 Duo (SM-J720M)
+2GHz 64bit Octa-core18% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (14nm)
+170 grams (5.95 ounces)2% Lighter	vs	174 grams (6.09 ounces)
+8.1 millimeters (0.32 inches)1% Thinner	vs	8.2 millimeters (0.32 inches)
+720x1440 pixels13% Higher resolution screen	vs	720x1280 pixels
+269 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	267 PPI
+5.99"9% Larger screen	vs	5.5"
+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	HDR photo only main camera
+(front) 16MP99% Higher resolution secondary camera to take pictures and selfies	vs	(front) 8MP
+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files	vs	(4G LTE) 150 Mbps
+Ambient light sensorAdvantage Sensors help you use the device	vs	Not supported
+CompassAdvantage Sensors help you use the device	vs	Not supported
+GyroscopeAdvantage Sensors help you use the device	vs	Not supported
+3080 mAh3% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+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)
+Active noise cancellationAdvantage More noise-canceling microphones allow for better quality in calls and audio for recorded videos	vs	Not supported
3GB LPDDR3	vs	+3GB LPDDR4Advantage This RAM type is better and more efficient.
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
(dual camera) 12MP + 5MP	vs	+(dual camera) 13MP + 5MP5% Higher resolution main camera
f/2.2 (aperture)	vs	+f/1.9 (aperture)16% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(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 10Advantage Android 10 is newer and safer
Not supported	vs	+ANT+Advantage Sensors help you use the device
LiPo: li-ion polymer (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily
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

25 Common items in both devices

32GB (21GB available)

eMMC 5.1

Until 256GB microSD, microSDXC

Plastic body, glass front

16 million

LED flash on both cameras

Only digital zoom

+18 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 J7 Duo (SM-J720M)
Change model		Choose the model
Model	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Other model names	红米自拍手机S2, Xiaomi S2, Xiaomi Ysl	Galaxy J7 Duo J720M Single-Sim, Samsung J720
Country or region available	(Global, International), China	(Latin America)
Brand	Xiaomi	Samsung
Release date	5/1/2018	4/1/2018
Depth	8.1 millimeters (0.32 inches)	8.2 millimeters (0.32 inches)
Size (width x height)	77.26 x 160.73 millimeters (3.04 x 6.33 in)	77.2 x 153.5 millimeters (3.04 x 6.04 in)
Weight	170 grams (5.95 ounces)	174 grams (6.09 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 J7 Duo (SM-J720M)
Display type	TFT IPS LCD	Super AMOLED
Screen size	5.99" inches	5.5" inches
Screen-to-body ratio	~74.6% (screen-to-body ratio)	~70.4% (screen-to-body ratio)
Display resolution	720x1440 pixels	720x1280 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	269 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	60Hz
Display features	feature not registered	Not supported
🤖 Operating System
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
System version	Android 7.1.2 Nougat	Android 8.0 Oreo
Firmware update	Android 8.1 Oreo	Android 10
User Interface	feature not registered	One UI 2.0
⚙️ Processor
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Chipset	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)	64bit: Samsung Exynos 7885 (14nm)
CPU	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)	Octa-core, 2 processors: 2x 2.2GHz 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	AnTuTu: 98104 (v7)
💽 Memory and storage
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
RAM memory	3GB LPDDR3	3GB LPDDR4
Internal storage	32GB (21GB available) eMMC 5.1	32GB (21GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) micro-SIM (3FF)
Maximum Download / Upload	300/50 Mbps	150/50 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	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 850/900/1700/1900/2100
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 Cat4 (1, 3, 4, 5, 7, 8, 12, 13, 17, 28, 66) TD-LTE (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
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
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Back camera (main camera)	(dual camera) 12 megapixels 5MP depth	(dual camera) 13 megapixels 5MP depth f/1.9
Main camera resolution	4000x3000 pixels	4128x3096 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash on both cameras	LED flash on both cameras
Focal aperture	f/2.2 (aperture)	f/1.9 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	1.25µm pixel	feature not registered
Autofocus	PDAF: phase detection 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	Not supported
HDR	HDR photo on both cameras	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Front camera (secondary)	16 megapixels	8 megapixels
Front camera resolution	4608x3456 pixels	3264x2448 pixels
Video recording (secondary)	HD (1280x720)	Full HD (1920x1080)
Front flash	LED	LED
Focal aperture	f/2.0 (aperture)	f/1.9 (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
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	Not supported
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
USB	MicroUSB 2.0, USB OTG On-The-Go	MicroUSB 2.0
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, BeiDou
NFC	Not supported	Not supported
Infrared port	Supported	Not supported
🧭 Sensors
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer ANT+ Face unlock 2D Fingerprint sensor (front-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	3080 mAh	3000 mAh
Charger, watts	10W (5V/2A) Wired charging	Wired charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	20 hours
Standby	feature not registered	feature not registered
➕ Other features
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
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, Gold, Rose Gold, White • Samsung Pay
☢️ Radiation rate
	Redmi S2 (32GB)	Galaxy J7 Duo (SM-J720M)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.97W/kg (head), 0.55W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered