Xiaomi Redmi S2 (32GB) vs Quantum Sky

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

11/4/2018 9:49 PM, updated: 6/23/2023 8:41 AM

Compare Quantum Sky X Xiaomi Redmi S2 (32GB) 10Points

Specifications Compare Models Pictures

5.99"
IPS

720x1440

12
MP

16mp

3GB
RAM

Octa-core

3080
mAh

(Non removable)

09Points Quantum Sky Compare Xiaomi Redmi S2 X

Specifications Compare Models Pictures

5.5"
IPS

1080x1920

13
MP

16mp

4GB
RAM

Octa-core

4010
mAh

(Non 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!

10 Advantages Xiaomi Redmi S2 (32GB)	vs	9 Advantages Quantum Sky
+2GHz 64bit Octa-core44% More powerful processor, you can open your applications faster	vs	2GHz 64bit Octa-core (28nm)
+170 grams (5.95 ounces)7% Lighter	vs	182 grams (6.37 ounces)
+8.1 millimeters (0.32 inches)2% Thinner	vs	8.3 millimeters (0.33 inches)
+5.99"9% Larger screen	vs	5.5"
+(dual camera) 12MP + 5MP33% Higher resolution main camera	vs	(back) 13MP
+Android 8.1 OreoAdvantage Android 8.1 Oreo is newer and safer	vs	Android 7.0 Nougat
+Face unlock 2DAdvantage Sensors help you use the device	vs	Not supported
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)
+Active noise cancellationAdvantage More noise-canceling microphones allow for better quality in calls and audio for recorded videos	vs	Not supported
+4.2 + A2DPAdvantage Bluetooth 4.2 + A2DP is newer and faster	vs	4.0 + A2DP
3GB LPDDR3	vs	+4GB LPDDR333% More RAM memory. Typically more responsive and better for multitasking.
32GB (21GB available)	vs	+64GB (53GB available)152% More internal storage for applications and files
Plastic body, glass front	vs	+Aluminum body, glass front, aluminum back with plastic endsAdvantage More resistant material
720x1440 pixels	vs	+1080x1920 pixels100% Higher resolution screen
269 PPI	vs	+401 PPI49% Crisper display of text, images and videos because it has more pixels per inch (ppi)
f/2.2 (aperture)	vs	+f/2.0 (aperture)10% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Not supported	vs	+PedometerAdvantage Sensors help you use the device
3080 mAh	vs	+4010 mAh30% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supported	vs	+Gorilla Glass 3Advantage Protection against scratches on the screen lets you carry your phone with your keys

33 Common items in both devices

eMMC 5.1

Until 256GB microSD, microSDXC

TFT IPS LCD

16 million

LED flash on both cameras

Only digital zoom

PDAF: phase detection autofocus / Autofocus

+26 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)	Quantum Sky
Change model
Model	Redmi S2 (32GB)	Quantum Sky
Other model names	红米自拍手机S2, Xiaomi S2, Xiaomi Ysl	Positivo Quantum Sky 4G 64GB, Quantum Sky QX1
Country or region available	(Global, International), China	Brazil
Brand	Xiaomi	Quantum
Release date	5/1/2018	8/29/2017
Depth	8.1 millimeters (0.32 inches)	8.3 millimeters (0.33 inches)
Size (width x height)	77.26 x 160.73 millimeters (3.04 x 6.33 in)	76.5 x 154.5 millimeters (3.01 x 6.08 in)
Weight	170 grams (5.95 ounces)	182 grams (6.37 ounces)
Build, materials	Plastic body, glass front	Aluminum body, glass front, aluminum back with plastic ends
Protection against water and others	Not supported	Not supported
📲 Display
	Redmi S2 (32GB)	Quantum Sky
Display type	TFT IPS LCD	TFT IPS LCD
Screen size	5.99" inches	5.5" inches
Screen-to-body ratio	~74.6% (screen-to-body ratio)	~70.6% (screen-to-body ratio)
Display resolution	720x1440 pixels	1080x1920 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	269 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 3
Refresh rate	feature not registered	60Hz
Display features	feature not registered	2.5D glass
🤖 Operating System
	Redmi S2 (32GB)	Quantum Sky
System version	Android 7.1.2 Nougat	Android 7.0 Nougat
Firmware update	Android 8.1 Oreo	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Redmi S2 (32GB)	Quantum Sky
Chipset	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)	64bit: MediaTek Helio P10 (MT6755) (28nm)
CPU	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)	Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.2GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 506 650Mhz	ARM Mali-T860 MP2 (700MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Redmi S2 (32GB)	Quantum Sky
RAM memory	3GB LPDDR3	4GB LPDDR3
Internal storage	32GB (21GB available) eMMC 5.1	64GB (53GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Redmi S2 (32GB)	Quantum Sky
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) micro-SIM (3FF) and nano-SIM (4FF)
Maximum Download / Upload	300/50 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	Tri-Band 850/1800/1900
Primary 2G network	CDMA 800 (China), GSM 850/900/1800/1900	GSM 850/1800/1900
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 850/1900/2100
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 Cat6 (1, 2, 3, 4, 5, 7, 28)
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+, LTE
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/1800/1900
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)	Quantum Sky
Back camera (main camera)	(dual camera) 12 megapixels 5MP depth	13 megapixels
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/2.0 (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 on both cameras
Camera extras	feature not registered	Sony IMX258 (back) Samsung S5K3P3 (front)
📸 Front camera
	Redmi S2 (32GB)	Quantum Sky
Front camera (secondary)	16 megapixels	16 megapixels
Front camera resolution	4608x3456 pixels	4608x3456 pixels
Video recording (secondary)	HD (1280x720)	HD (1280x720)
Front flash	LED	LED
Focal aperture	f/2.0 (aperture)	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
	Redmi S2 (32GB)	Quantum Sky
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.265, H.264, H.263
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, OGG, eAAC+, FLAC
🔌 Connectivity
	Redmi S2 (32GB)	Quantum Sky
USB	MicroUSB 2.0, 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	4.2 + A2DP	4.0 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS
NFC	Not supported	Not supported
Infrared port	Supported	Not supported
🧭 Sensors
	Redmi S2 (32GB)	Quantum Sky
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Pedometer Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi S2 (32GB)	Quantum Sky
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3080 mAh	4010 mAh
Charger, watts	10W (5V/2A) Wired charging	10W Wired charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	28 hours (1.2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Redmi S2 (32GB)	Quantum Sky
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: Silver, Gold • Screen protector included • Silicon case included
☢️ Radiation rate
	Redmi S2 (32GB)	Quantum Sky
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered