Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) vs Xiaomi Redmi S2 (32GB)

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Side by side comparison between Asus Zenfone 4 vs Xiaomi Redmi S2 phones, differences, pros, cons and full specifications. What's the better?

11/4/2018 9:49 PM, updated: 11/15/2020 4:31 PM

Compare Xiaomi Redmi S2 X Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) 19Points

Specifications Compare Models Pictures

5.5"
IPS

1080x1920

12.2
MP

8mp

4GB
RAM

Octa-core

3300
mAh

(Non removable)

06Points Xiaomi Redmi S2 (32GB) Compare Asus Zenfone 4 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? Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)

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!

19 Advantages Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	vs	6 Advantages Xiaomi Redmi S2 (32GB)
+4GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.	vs	3GB LPDDR3
+64GB (52GB available)148% More internal storage for applications and files	vs	32GB (21GB available)
+165 grams (5.78 ounces)3% Lighter	vs	170 grams (5.95 ounces)
+7.5 millimeters (0.3 inches)8% Thinner	vs	8.1 millimeters (0.32 inches)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+1080x1920 pixels100% Higher resolution screen	vs	720x1440 pixels
+401 PPI49% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	269 PPI
+(dual camera) 12.2MP + 8MP19% Higher resolution main camera	vs	(dual camera) 12MP + 5MP
+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+f/1.8 (aperture)22% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.2 (aperture)
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(front) Full HD (1920x1080)125% More image quality for recording videos with the secondary camera	vs	(front) HD (1280x720)
+(4G LTE-A) 600 Mbps100% Faster for surfing the internet and download files	vs	(4G LTE-A) 300 Mbps
+3300 mAh7% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3080 mAh
+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
+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
+Gorilla Glass 3Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
5.5"	vs	+5.99"9% Larger screen
LED flash	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light
(front) 8MP	vs	+(front) 16MP99% Higher resolution secondary camera to take pictures and selfies
Android 7.1.1 Nougat	vs	+Android 8.1 OreoAdvantage Android 8.1 Oreo is newer and safer
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.

27 Common items in both devices

2.2GHz 64bit Octa-core

Until 256GB microSD, microSDXC

TFT IPS LCD

16 million

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

+20 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
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Change model		Choose the model
Model	Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Other model names	Asus Zenfone 4 (NFC version) Snapdragon 630 (4GB RAM)	红米自拍手机S2, Xiaomi S2, Xiaomi Ysl
Country or region available	(Europe), South Africa, China, USA, Hong Kong, Taiwan	(Global, International), China
Brand	Asus	Xiaomi
Release date	10/1/2017	5/1/2018
Depth	7.5 millimeters (0.3 inches)	8.1 millimeters (0.32 inches)
Size (width x height)	75.2 x 155.4 millimeters (2.96 x 6.12 in)	77.26 x 160.73 millimeters (3.04 x 6.33 in)
Weight	165 grams (5.78 ounces)	170 grams (5.95 ounces)
Build, materials	Aluminum frame, glass front/back	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Display type	TFT IPS LCD	TFT IPS LCD
Screen size	5.5" inches	5.99" inches
Screen-to-body ratio	~71.4% (screen-to-body ratio)	~74.6% (screen-to-body ratio)
Display resolution	1080x1920 pixels	720x1440 pixels
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	269 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 3	Not supported
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
System version	Android 7.1.1 Nougat	Android 7.1.2 Nougat
Firmware update	feature not registered	Android 8.1 Oreo
User Interface	feature not registered	feature not registered
⚙️ Processor
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Chipset	64bit: Qualcomm Snapdragon 630 SDM630 (14nm)	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)
CPU	Octa-core, 2 processors: 4x 2.2GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core)	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)
GPU graphical controller	Qualcomm Adreno 508	Qualcomm Adreno 506 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
RAM memory	4GB LPDDR4X	3GB LPDDR3
Internal storage	64GB (52GB available)	32GB (21GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD 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	China version: UMTS 850/900/1900/2100 North America version: UMTS 800/850/900/1700/1900/2100 Taiwan version: UMTS 800/850/900/1800/1900/2100	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 China version: LTE (Bands 1,2,3,5,7,8) TD-LTE (Bands 34,38,39,40,41) North America version: LTE (Bands 1,2,3,4,5,7,8,12,17,28) Taiwan version: LTE (Bands 1,2,3,5,7,8,18,19,28) TD-LTE (Bands 38,39,40,41)	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
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Back camera (main camera)	(dual camera) 12.2 megapixels 8MP 12mm	(dual camera) 12 megapixels 5MP depth
Main camera resolution	4032x3024 pixels	4000x3000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash on both cameras
Focal aperture	f/1.8 (aperture)	f/2.2 (aperture)
Focal length	25mm (lens)	feature not registered
Sensor size	1/2.55" inches	feature not registered
Pixel size	1.4µm pixel	1.25µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS (4-axis): 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	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
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Front camera (secondary)	8 megapixels	16 megapixels
Front camera resolution	3264x2448 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	24mm (lens)	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	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.265, H.264, H.263	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, OGG, eAAC+	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
USB	USB 2.0 Type-C reversible connector	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, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3300 mAh	3080 mAh
Charger, watts	10W (5V/2A) Wired charging	10W (5V/2A) Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	30 hours (1.3 days)	feature not registered
Standby	552 hours (23 days)	feature not registered
➕ Other features
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	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: Moonlight white, Mint green, Midnight black • Asus ZenUI 4.0 • 2.5D glass screen • Sony IMX362 back camera sensor • Fast battery charging: 50% in 36min • 24-bit/192kHz audio • DTS surround sound • VoLTE	• Colors: Gray, Gold, Rose Gold, Blue, Black • MIUI 10 • 18:9 screen
☢️ Radiation rate
	Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)	Redmi S2 (32GB)
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